NefMoto

Would anyone want to discuss the tuning together on the example of the SIMOS 8.4 driver?
As you know, the 3.0TFSI engine is equipped with a compressor. Thus the boost pressure at stage 1 will remain at the same level. I think that you need to knock on fuel and ignition.
In some cases, move the rotation limiter.

Unfortunately, I do not have any damos for this ECU.

I place here the original file from the Audi S5 3.0TFSI 333HP.

Will there be willing people who will share information and we will create a map pack for Stage 1 together, and then we will jointly take on the ECU SIMOS tuning challenge?

You don`t need the damos first. You Need the FR to understand how this is working.....

It would be naive to assume there's no pressure regulation just because it's a supercharger.

I would like to believe that everyone starts with the FR. :D hehe

Most do not read and have no knowledge how to do something. It is best to buy Slave equipment and only upload and be a slave.

The first rule is to think what to do. What I see in cars tuned by professional tuners only shows that they lack basic knowledge, and have large companies and are pro tuners.

Everyone just scare others how difficult it is. But when it comes to true accuracy, many professional tuners are missing despite the fact that they are able to perform the tuning of a given car.

It is not art to buy a file from the support. The trick is to be an amateur and know what professionals can not do.

There are many wise people in this forum.

But the world is broken. One person hates and envies others.

Through such behaviors, internet forums become garbage and cease to fulfill the tasks to which these forums were founded.

Whether using this forum I will gain knowledge or not about the new ECU, I do not give up because I just like it.

https://www85.zippyshare.com/v/mWqCu0bC/file.html

The simos18 fr you uploaded has great differences from the simos8.4 you are trying to tune.

So, maybe YOU own a FR for SIMOS 8 and would you like to share?

I am willing to attach a document for reading to readers.
https://fs02n2.sendspace.com/dl/fe19591170c77135d936b90d73d6487c/5b9e97f23f70eb28/tlnxz4/3.0L_V6_TFSI_Engine.rar

I habe damos and fr I'll post when I get a chance. Just taking a quick break while doing a clutch atm

Ouch, no fun.
Removing that exhaust is not fun. Audi made a special tool to get the 12mm exhaust bolts. Helps a lot.

Thank you for the good info also.

In other news, Marty has been assassinated by the professional audi tuners of the world association for threatening to share documentation on a still highly profitable platform.

Does anyone else think it's absolutely ludicrous that most companies are charging over $1000 for a simple stage 1 on these cars?

You need to do both ECU and gearbox on this...
So besides Simos8 you also have DL501, AL551 or in some cases GS19 to deal with.

For reference, APR is charging $1299 for ECU Stage 1 + $999 for Gearbox.  Ouch.

6 Speed MT FTW.

I ask if there are more pro tuners or ordinary amateurs in this forum?

If the pro tuner knows everything, why do they log in to the forum? Is it only to feed on the knowledge of amateurs and not to give anything away?


I talked to several pro tuners in my country about SIMOS 8.4 tuning. They say there is no need for modification in the TCU box for Stage 1.

In my country, the price for tuning SIMOS 8.4 in a professional workshop is within 350 euros.

I will participate. Let's do this for fun and knowledge.

Which maps are required for a basic tuning?

How how much power/torque can you get with stage-1 without pulley change?

Why assume Marty was doing a clutch on a 3.0t? I bet it was a mk4 or b5ish something.

That means your tuners are shit. Look on the dyno where max power is, now consider than on most of these cars shift point is at 6400 rpm (S4 excluded, that has it at 6800 rpm).
"No need for modification" is in other words "I am a shithead who doesn't know how". If someone tells you gearbox is "not needed" on these, then you know where to NOT go.

As for prices - I don't know about the US, but over here I do 600 EUR inc. VAT on Dyno for Stage 1 and ca. 850-950 inc. VAT for Stage 2, depending if I need the 4 bolt pulley or the normal one...
Both of those include the gearbox mapping, whether it is a C6 with GS19, C7 with DL501, B8 with DL501 or D4 with a AL551.

That's why I think pro tuners are scammers.
They have money for expensive equipment, and therefore the ability to cheat others and use them.
I will not give you where, but I called a few large companies in my country to ask about the course of the modification.
In many files tuned in ME7, MED9, MED17 I encounter large tuner errors. I think that very few people have an idea for SIMOS and that's why nobody says anything. Probably most of the pseudo-pro tuners that work with others.

If we are talking about an automatic transmission. I think that it is enough to limit the engine's revolutions, at which the change of gear will occur, raise the upper and sometimes also the torque limiter.

I also change shift speeds, shift characteristics and a lot of other things.

If you approach things only with "it is enough to do this" you will never get good at anything.

So for a stage1 i will have to do the dl501 aswell because of what? torquelimiter?
Do you really need this for lets say 400hp/500nm or a little bit more?

At the very least....
Because look at the dyno graph where max power is. It's at 7000+ rpm on a Stage 1 car.
And when your shiftpoint is at 6400 rpm (S5) that's not quite where you want it to be, now is it?

On S4's the shift point is 6800 rpm usually, that will still cut into your max attainable/usable power.

Also, I already said about "really need" - you don't "really need" to do shit. Drive the car stock.

I have tuned my own manual s4 to stage 1 on both pump and e85.  I am certainly nowhere near as comfortable with this ecu as I am with bosch motronic ecus, but enough to feel confident that I was able to tune mine better than any other OTS pro tune could be.

I will participate in this thread as time allows with what I learned while tuning my own car.

Engine not much to it - request correct lambda, make sure the compressor flap is shut all the way and tune timing to suit the vehicle/fuel combo.
No mystery there whatsoever.

Certainly no mystery to what the end goal is, but how to calibrate the software to do it can be difficult for the first timer.

Attached are exports that should help. 

The first is an export of the maps I have defined for my file.  One could make an XDF out of this.

The other is an export of the maps I changed for stage 1 & e85.   I can't be sure that every change is absolutely necessary, but through a lot of trial and error and some slightly educated guessing, it works great for me. 

Also attached is a shitty VCDS log.  I feel like I am tuning half blind, being limited to 10 vars per log.

i was just gonna say this ;)

Biggest thing on b8/b8.5 is closing the bypass flap that opens and lets all the boost fly away.  And then up revlimit, flash tcu so it'll matter...  I also adjust the knock sensitivity quite a lot at high RPM on the b8 cars as long as IAT isn't an issue.  Be careful if you change pulley without a heat exchanger, because IAT will be high.

Intake and tune b8 with a tcu flash is faster than a single pulley car without a tcu flash ;)

Stock NM Limit in the Dl501 is 500nm and i finally had the pleasure to drive a car with and without tcu tune.
It makes a whole lot of difference and i know understand what you mean.

These cars exist with and without launch control from factory. They have changed it with the facelift maybe. Does someone have a file, version number or anything else and can clearly say its a facelift or non-facelifted car or has/has not lc?

this is still a mystery to me

Any progress on this topic?
A friend of mine ask me to do something for his Q7, which have some down tuned version of this engine (only 206kW). ECU is SIMOS 8.33
I agree that real power of this engine is in upper rpm range, but this obviously is not the nature of Q vehicles :)
And there is another thing - as I know this vehicles are equipped with AISIN gearbox not with S-tronic like in B8 vehicles.

Anyway. I start to study FR and files shared by SB_GLI (very helpful). However I don't like to change unnecessary things in any tune. So I'd like to continue this tread so we can discuss any map/line/SV that we think should be modified.

I'll start with maps pointed out from SB_GLI
1) ip_flow_vol_scha_bas_1 - Supercharger basic volume flow - I don't think we should modify this map if we didn't made any hardware change on supercharger. I think we should change this map extrapolating values in it only if we plan to go over 2.1 Pressure Ratio or we plan to spin SC over 18 000rpm. Stock pulley configuration is 1:2.55, which means we can bump rpm limit to 7 000rpm without touching this map. If we plan some pulley upgrades together with rising rpm limit, then maybe we should extrapolate values in this map.
2) ip_maf_max_stnd_vvl - Maximum intake air of the engine at standardized ambient pressure for different valve lifts - I think this map should be changed only if we make some hardware changes on intake/exhaust side of the engine rising its breathing potential. Anyway in this map I can see enough air for close to 300kW.
3) ip_map_max_pow_lim - Maximum intake manifold pressure for MAF_SP limitation - If we take into account values from ip_flow_vol_scha_bas_1, engine displacement - 3 liters, and pulley ratio - 1:2.55, then maximum PR that we can achieve with stock configuration is close to 2.3-2.4, so maybe with stock hardware we can get 2 300mbar absolute pressure.

I'll appreciate if some one share another opinion on those or other maps.
I'll continue with other maps in next days...

btw.. here you can find original file for 8K5 907 551 E (http://"https://drive.google.com/file/d/1z4cOF6oM1QqRZcAWWotZ0cM5M_T3Vypa/view?usp=sharing"), for a very helpful map exports that SB_GLI posted earlier.

Also in this folder (http://"https://drive.google.com/drive/folders/1k9tzzHPt_ZK9_qR5LgA74H88V_wA27f3?usp=sharing") you can find 3.0t & 3.2FSI materials that I already found somewhere in the internet.

This is pointless

buy a pro file and use it. log the car stock, log the tune. try do define the changed maps, try to understand.

i dont think you will make progress by studying the FR and to things in theory. also you will not "try" things on a expensive Q7 friends car

i like your diy approach but this engine/ecu is not used widely becuase its not cheap like the me7 cars and so on

Sorry that maybe I'm too rude, but I think your post was pointless.

So you are pro, and we should buy a file from a pro - maybe you are right.

The big problem is that I already saw a lot of shits in pro files.

Let's start from the beginning - it was ten years ago, when ME7 cars was not so cheap.
It was moderately upgraded 2004 B6 1.8T car. Tuning was very nice unfortunately there was small problem - when you sharply floor the car, there was some slight detonations right after flooring.
Pro tunner that I was using then didn't manage to find why this is happening.
Then I discover ME7Logger and I find out that there was exactly 1s delay from flooring the car to requesting reasonable lambda. So it turns out that in my file TLAFA was 1sec, and pro tuner didn't manage to find it out.

When I moved to EDC16 car (3.0tdi in B7) I searched a lot, and in most of the case I saw misscalibration of duration maps together with upped boost, and this was most of the PRO tunning solutions. In all of the PRO solutions that I examined there was no change in measuring block limits.

Recently I gave a look at a file of tuned 1.8tfsi in A5 of a friend - I should admit it was quite good, without changes everywhere in the file. But still why you want to bump LDRXNZK to the same level as LDRXN? I don't think this is good solution.

Don't take me wrong - there is different ways to do something and even decalibrating injector times in EDC16 could bring good results in terms of power - surely it is not the right way.
I can understand why pro tunes could do something like this. When you should do something for living you should be time efficient. Decalibrating injection times and rising all kind of boost controling maps in EDC16/17 is most time efficient way. It is quite easy to find those maps in every file of those ecu families and not everyone will go high in the mountain with his car.

That's way I prefer to spend my personal free time in studying this system, and to find best way for stage 1 tune, without extensively changing everything containing lambda/timing/load in it's name.
If you have some knowledge in this system, that you want to share with this great community that is ok. Everyone here will appreciate it!
If you'd like to sell something - still ok, but not in this sub-forum.

i understand all of your point, you are correct. but the difference still persists.
Well defined Bosch ecu's with lots and lots of information vs. Simos 8.x with limited amount of cars = limited information publicly

I never said you should use the "pro" tune. But its a piece of information you can buy for small money. Another approach is to just read a pro tuned car which is for free.
Your bad edc16/17 files helped you to learn and do it better and thats my point. A file is worth more than 13000 pages of FR if you start from almost nothing.

btw i am not a pro  ::)

That's GREAT advice man! Love it!

There is little interest in this engine, but I will ask you how to get more air in this engine without any hardware changes?

keep the bipass valve shut

Thank you for your answer, but whether, apart from maintaining a closed bypass, it is not necessary to increase the parameters in the Max. pressure up throttle at standard conditions map?

This post went no where. :( wish there was more collaboration on the simos 8 platform.

It is no wonder that no one wants to cooperate in this matter, because it is not necessary. If you find the right maps, you will notice how easy it is to do it. SB_GLI has included a set of data needed to modify it, although it's not exactly the set that it described as stage 1 maps. Such advice given by Marty "keep the bipass valve shut" does not lead to the right track either.

But what he said is correct.

Keep it shut and you are 95% of the way there. The other 5% is to set fueling decently.

It's harder to open them than keep them locked after rising TL's. :)

Not when you know WTF you're doing

Aaaaaaand this forum has officially died on its arse.

It's packed to the brim with ME7 info from well meaning, knowledgeable good guys. Unfortunately, they've all either stopped using this forum or unfortunately passed. MED9 was slowly forthcoming. Anything slightly more modern just has Dunning Kruger victims clinging onto what knowledge they have, whilst giving themselves a hard on as they drip feed meaningless shit to try demonstrate superiority.

I've gradually went from several daily checks of this forum to maybe once or twice per month.

RIP a once great resource and excellent idea. Mark it read-only and keep it as a shrine until the domain and hosting expires.

It is still a great resource and offers much more then any other forum out there.You have to consider what have you done yourself to contribute here and make this forum better...

Further more 70% of the users here are so called "Professionals" that are hiding under different nicknames/usernames to get spoon fed info and not to embarass themselves with questions that are done from hobbyists...

There are new and old users here that still do nice things no matter what you say...It is their time not yours and no one should demand more from people that are posting here.

anyway I hope you are not getting offended by the above as i speak in General.

I also think that this forum is a great source of information. In this thread you have everything you need to modify simos 8. Nobody gives everything on the silver tray, but if you already know how to modify gasoline engines, you should be able to do it without much trouble. Simos 8.5 is my first modified petrol engine. So far I've only played with diesel. It took me about two weeks to get over 400 horsepower from 3.0 tfsi with the DL501 modification. At that time I did many other things with my professional work, of course.

No, I see your angle. I have contributed as much as I can on ME7, MED9, MED17 and DSG tuning with the latter three being still profitable platforms. Whilst it's not reasonable to expect people to just pour heart and soul into spoon feeding people, it's also completely unnecessary for people to post purely for the sake of saying "I know the answer to this but I'm not telling you". They can just stay quiet.

It's still a great resource, hence why it should be marked as read-only. I've seen little to no useful content posted in 2019.

Now I see your way of seeing things in this forum. It's people like you who make them read-only. If you are interested in developing this topic, show us what you have done so far and what you have a problem with.  Then we will know how to help you. Do you expect someone here to create a tutorial which byte, step by step, should be changed?

and what exactly have you contributed to this forum bub? you think anyone is going to help a newcomer wit a stick up their twat? lol try again, the fr for this ecu is on the forum feel free to read and make some contributions of your own or keep your worthless trap shut   

https://www.drive2.com/b/467926861087769658/

It so happens, boy, that I don't need help. I made this driver and I offer help myself. Not as much help as you offer to push a stick to the cunt...

boy oh boy. good luck on this forum lol. you dont need help? funny how youre posting on this thread asking for help huh? fuck off twat crawl back into the hole you wondered out of :D :D :D

I asked for help and I didn't get it, so I had to do it myself and I did quite well :) Now I offer help myself. Do you see anything wrong with it?

Lol sure, And what help have you offered? What have you contributed to this forum at all? Nothing. Your post count is all asking for help or arguing with me. Good try tho.

Try to read with understanding. I offer help to anyone who wants to get more power from their 3.0 tfsi by modifying the Simos 8 calibration data.

cool story bro. then upload your current project and publicly post your findings...

exactly what i thought... heh

Of course I'll do it. Immediately after you publish your achievements.

http://nefariousmotorsports.com/forum/index.php?topic=13862.msg131904#msg131904

http://nefariousmotorsports.com/forum/index.php?topic=17027.msg131265#msg131265

http://nefariousmotorsports.com/forum/index.php?topic=17026.msg131263#msg131263

http://nefariousmotorsports.com/forum/index.php?topic=16807.msg130233#msg130233

http://nefariousmotorsports.com/forum/index.php?topic=16853.msg130178#msg130178

here you go pal sense you singed up on this forum, i could go much further back but i figured id only go as far abck as you time on this forum  ;)

Good job, man. Good job!

thanks and for you? nothing but a bullshit talker... knew it 

What can I do to help you, nice man? Describe your problem with Simos 8 or maybe EDC17, 16, and if I can help you I will help you.

http://nefariousmotorsports.com/forum/index.php?topic=13862.msg131904#msg131904

http://nefariousmotorsports.com/forum/index.php?topic=17027.msg131265#msg131265

http://nefariousmotorsports.com/forum/index.php?topic=17026.msg131263#msg131263

http://nefariousmotorsports.com/forum/index.php?topic=16807.msg130233#msg130233

http://nefariousmotorsports.com/forum/index.php?topic=16853.msg130178#msg130178

I can't see here anything about simos 8. If you need some help write what is your problem, and I'll try to help.

Hi everybody.
I've got s4 with simos 8.5 and tuned it well with stage1. Car drive great, but i needed more power after few months and installed bigger187mm CS pulley. After few mods with stage 2 car still dive good, but i dont feel many (or any?) diference with stage 1. The biggest problem is bleeding boost and power at high revs (5500-6000 and more). At stage one i request more boost with adding some mbars to ip_maf_sp map and edit ip_map_max_pow_lim, but at stage 2 there is a issue. Attached logs:
stage1 : https://log.malonetuning.com/chart/286424#H8KLCABxwqpkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D (https://log.malonetuning.com/chart/286424#H8KLCABxwqpkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D)
stage2:https://log.malonetuning.com/chart/286425#H8KLCAA1wqtkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D (https://log.malonetuning.com/chart/286425#H8KLCAA1wqtkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D)

Hi everybody.
I've got s4 with simos 8.5 and tuned it well with stage1. Car drive great, but i needed more power after few months and installed bigger187mm CS pulley. After few mods with stage 2 car still dive good, but i dont feel many (or any?) diference with stage 1. The biggest problem is bleeding boost and power at high revs (5500-6000 and more). At stage one i request more boost with adding some mbars to ip_maf_sp map and edit ip_map_max_pow_lim, but at stage 2 there is a issue. Attached logs:
stage1 : https://log.malonetuning.com/chart/286424#H8KLCABxwqpkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D (https://log.malonetuning.com/chart/286424#H8KLCABxwqpkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D)
stage2:https://log.malonetuning.com/chart/286425#H8KLCAA1wqtkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D (https://log.malonetuning.com/chart/286425#H8KLCAA1wqtkXgIDTcOLw4EKwoMwEATDkH%2FDmcOzBAzCtcOSfkvDiCHDqsKSLlgjw4kKw6rDl2vDrMKlw4fCmTfDoxwNw6nDm8OLw4wmw6bCtC7ChcOQeMOUckpZDsK%2BIijDssOMOShTwpUwwo5mN2HCk3JbwpbDuMORGwrDqx84wosOD8K0eMOiwo3ClwfDmcOfe8OVVMKWScK0bmzDq8O9CcOcOMKXwrPCgQAAAA%3D%3D)

My observations show that this map is useless for stage1 or 2+. Any changes make nothing to performance of the car. neither extrapolation nor decalibration. You can leave this map stock even if you plan to upgrade pulleys to get more air.


This map is software limited to 1389 mg/stk which can give about 2.5 bar of boost. Its enought for 500KM and moore.

With stock hardware configuration we can achieve about 2.1 bar at sea level and higher rpms then stock. Z axis of this map is also limited to 1389 mg/stk. This map and maximum allowed torque at clutch due to torque limitation depending on gear ratio are the clue to keep compressor bypas close.
If I'm wrong, please correct me.

Noob here trying to tune my b8 s4 after I fix it's dsg transmission. From what I can gather, the cheapest way to do it is to use PCM flash (sorry if it's something obvious) along with SIMOS 8 plugin. I was trying to look up the maps in a bin file using their offsets from the file with a list of maps posted in some of the previous posts using trial WinOLS but values are off. I might be using a wrong bin file (cal only?) or there's something more to the offsets. In any event, I'll need to correct the checksums and bypass the RSA security and I can't do it without PCM flash.

Meanwhile while waiting on the PCM flash tool to show up, converting the list of maps uploaded by SB_GLI which was apparently exported from WinOLS to xdf format. Entered several maps into my draft xdf file manually, which is too slow, gotta come up with some kind of script to convert everything into xdf compatible format. The maps seem to make sense, I had trouble before because I used wrong stock file version (C instead of E) Something I noticed is that torque limitation map (i.e. max torque at clutch) for dct transmission is not in the list although it is described in the FR. I wonder if it should look just like a 6mt map and whether it could be found in the bin file manually. It might be near all the rest of torque at clutch limit maps.

Yes it could be find manualy. It's near othetr torque maps.

Another thing - maps for E software version don't work for C and D. My cars has a software version D, so that's a problem. Perhaps my ECU is compatible with version E ??? Something to dig around
P.S. just compared the same version level of E and D against each other (version 0004), seem to have very minor byte differences and values for most of the maps I already defined in my draft xdf file seem to match, except that version E has lower values for at max torque at clutch map at higher rpsm (6000-7000)

All maps are the same or similliar, but located in diferent areas. It is simply to find them in 2D mode. Version E has lower values for max torque at clutch map at higher rpms because there are many diferent power options at oryginally 3.0 tfsi e.g 290hp, 300hp, 310hp, 333hp. All that ecus got one different performance map. It's torque map. No difference at any lambda, ignition, air flow or limitter maps.

Yes, that's what I see. I was also referring to the fact that 'software' variation D with revision 3 is very different from the revision 4. However, across the revision 4, C, D or E seem very similar. Since I got revision 3 of software D in my ecu, I think I should update to revision 4 first and then apply changes.
One thing which I'm looking at in the FR is lambda maps. Since this is an TFSI engine, it seems to be different from non-FSI engines such as 1.8T. It appears that for 1.8T, there's mostly one map which needs to be updated called LAMFA plus some other maps to make the car "follow" the LAMFA. For 3.0t, looks like there 2 sets of maps we need to be concerned about, one for "homogenous" (low load I presume) and one for "stratified" mode (wot or something like that). Seems like stratified mode lambda maps are a lot richer that homogenous maps and we may be able to get away without fueling changes for now. I.e., some logs posted in this thread from the tune which presumably changed only torque limit maps and boost pressure limits show decent (to my very inexperienced pow) lambdas.
Another area is ignition timing, I'll be trying to run on 91 octane Cali gas, so maybe I'll need to change these values. Another thing I think I need to do is to look at 2.0t tfsi tunes, these may provide clues on what needs to be done for lambda and ignition maps for modes such as homogenous and stratified charge.
In any event, need to get my car assembled together first, my dsg is still laying under the car waiting for the front clutch cover.
P.S. got homogenous and stratified modes mixed up, homogenous is for high load and stratified is for low load conditions
P.P.S. PCM Flash is still on its way so can't play with a car. Ready to bolt the transmission back to the car, fun times ahead.

Still dont have PCM flash, it's been showing as cleared by Russian customs on June 20th. In some way, I hope it got lost and I can get a refund. After dropping and putting the trans back into this friggin car, I dont want to do any more repairs to this car. Not so keen on replacing the cats after I start getting the boost up or dropping the trans again if something else goes wrong. And for what, easy n54 stage 1 or 2 hp numbers. Given the price diff between, say e90 335i and the s4, I can't justifying spending development and repair time and money on this car to barely get 400hp out of it. Screw it.
p.s. nope, didn't lose it, basically explained to me that this is now what they see for shipping time due to covid. there's smaller number of planes now and there's also package backlog.
I probably should have used HP tuners solution (mpvi2) which includes map editing software and appropriate dongle. the downside is, of course, it's vin-locked and the total cost with their credit system is about twice as much not to mention that it can't do dl501 which I think I'll need to do as well sooner than later.

Well doh, why didn't it occur to me earlier to order PCM flash from some well-known UK chip tuning software reseller? I ordered it on Sunday night and now it's already landed in LA. Sucks to wait 3 months to realize it would take only 3 days if ordered from the right place. So I guess game on, then.

Quick update - I was able to find torque limit maps by gear in SIMOS8.4 bin file (D, 0003). One thing of note - it seems like there's only 4 of these there, and they align with MT/MT_4WD torque limit maps in SIMOS8.5. I didn't see anything resembling SIMOS8.5 AT maps. Regardless, I was able to modify simos8.4 torque limit maps and saw torque as high as 517Nm produced which is definitely not stock. I couldn't log it well since Eurodyne logger didn't want to save the log to file for me. I'll try to figure out another logging solution and maybe will post my xdf file.

Attached my xdf and bin file, I couldn't edit my previous post to add these files. This is all WIP and very raw.

If your using winols, what’s the map ID your referencing?

ip_tq_pow_max_at
ip_tq_pow_max_dct
ip_tq_pow_max_mt
ip_tq_pow_max_at_4wd

I have a logging solution for simos8.  Pm me for licensing infos.

yes, but I couldn't find ip_tq_pow_max_at, ip_tq_pow_max_dct and ip_tq_pow_max_at_4wd in simos8.4 binary. I only saw maps similar to ip_tq_pow_max_mt and ip_tq_pow_max_mt_4wd, so that's what I changed as you can see in from the bin/xdf (plus boost pressure limit). That said, this still might need to be refined a lot. Another note is that a mile after the pull (driving at very light throttle and low rpms), the car just shutdown and threw a bunch of "no communication with ECU" codes and doesn't restart even after flashing back to stock. While the current diagnosis is that this is likely an ECU power supply relay from this tsb https://static.nhtsa.gov/odi/tsbs/2014/SB-10055713-5611.pdf, it could be anything until I get that relay and it fixes the car.

is it UDS or CCP?

In that hexdump area of simos8.4, I edit those along with:
ip_tq_pow_max_drof_mt
ip_tq_pow_max_drof_mt_4wd
ip_tqi_dif_abs_lim
ip_tqi_dif_abs_lim_st
ip_tqi_dif_i_lim

Fyi, if your car is a DL501, your not going to generate more than 550Nm. The DL501 will limit the power delivery regardless of mods done to engine. You could overcome by under valuing the power over CAN but I've never found it to work 100% on my car at getting the full power available, unless the DL501 is programmed for the extra power allowance.

great, what do those drof maps do as well as ip_tqi_dif_abs_lim* and ip_tqi_dif_i_lim?

ip_tqi_dif_abs_lim
ip_tqi_dif_abs_lim_st
ip_tqi_dif_i_lim

The above are for limp mode power limits which I believe when triggered are active above 1500rpm. You don't need to edit these maps, but I do and max them out. I do my fair share of tracking and would not want throttle/power cut when I'm committed in or out of a corner.

ip_tq_pow_max_drof_mt
ip_tq_pow_max_drof_mt_4wd

The above from my understanding are for manual trans and/or free reving. However, a large amount of the ecu's I've worked on will use manual trans tables even on an automatic vehicle. If the manual trans maps are below the limits of the automatic maps, the manual map limits "could" restrict the final output power because those values are the lesser in the batch of torque maps and viseversa.

I have 2x A6 3.0t , one is an 2010 with 4FI910551D 0050 (TUNED) The other is a 2009 with 4F1910551A 0050 (STOCK) both CCAA.
Are the files vastly different or even compatible? if anyone knows.
I have tactrix 2 and pcmflash is coming tomorrow.

Thanks.

Yes, you could in theory also update the 2009 file with D variant frf and then flash with just the map calibration addresses edited.

However, you can’t do an actual read with simos8.4 with pcmflash, it’ll kick out a virtual read. The only tool I know that does an actual read through OBD is Kess, but you need to unlock OBD reading in boot mode first. That actual read would get you all in the map calibration addresses.

If you need a full read, only option is to bench, only tools I’m aware that bench are Autotuner and bFlash. Once read with one of those tools, you could view the full read by looking at the original backup file.


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Thanks for the reply, I think mine is Simos 8.3 if that makes any difference.
Pcmflash pdf says it can read and write, I was hoping to extract the tuned file and flash it back to my other ecu that is stock.
I've done plenty of Motronic stuff but know very little about Simos.

Pretty good marketing they are doing, but MagicMotorsport can as well, and it's a much bigger tool.
For Simos8.3 you either have full OBD protocol or not. If there is full OBD you need a dump and then that can be written OBD with RSA bypass.
If there's no full OBD protocol, and no RSA bypass implemented, then it needs to be set into devmode in bench or boot mode first.

Reading is impossible regardless until it's in devmode.

Pcmflash say it does a virtual read for simos 8.3 and 8.4 , does that mean it downloads an exact copy from pcmflash server?

Yes


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Do you think this will be similar to 8.51?  Mainly I'm looking to disable the SAI

Post your file and I’ll see if it’s similar to 8.4, to disable SAI


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To turn off SAI you need a switch. Simos 8.3 is so different from 8.5 that you will find it hard to find.

haven't posted here in a while, I ended up needing to replace the engine - driver side bank SC IC started to pour the coolant in the cylinders, and the engine hydrolocked. When I bolt everything back up (and as usual, being held up by small parts and details ::) I hope to continue playing with this ECU. Very curious about what needs to be changed to turn the SAI off and whether switching it off will make some monitors not pass the readiness tests.

One bit change.

Hi guys,
I have a question on tuning for E85, I see the scalar Constant for stoichiometric air/fuel ratio (=1/14.7) (c_mff_fac) is set at 0.0680 for gas .
If I change it to around 0.0940 for E85, would this work with the stock injectors?
Thanks.

For a pure E85 0,1 will be better.

Thanks for the reply,
I'm running a single pulley and want to go with the dual pulley setup soon, I have read that I will run out of injector using E85 and
would need an HPFP upgrade to give it more fuel, I'm used to swapping out injectors on my older builds, LOTS to read...

Yes. For dual pulley and E85 you need hpfp upgrade, but maybe E40 will be enought? Then you don't need new pump with upgrade.

Can anyone help me please with map Names for locations Between 0x5B198 -  0x5b217 on AUDI 8K0907551C-0005
Pretty sure its a torque threshold,
Anyone with a simos 8 Damos they would like to sell, let me know.

Thanks.

You do not need these maps. This is not what you think. Maps names: Map controller P gain  for stationary operation, Map controller D gain  for stationary operation... etc.

Ok thanks for the reply.

Hello

I found a local version S4 DL501 with a 440NM torque limit...

Yes you can find a lot of ip_tq_pow maps at 440Nm, same with the DROF speed maps at 500Nm. Although if editing Simos8.4 paired to DL501, you’ll need to edit the DSG maps.


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The gearbox torque limit is set to 440NM. So if you do not change the gearbox limit...

When downloading virtual files off the PCMFLASH server, can you flash the latest revision of your software or do you have to stick with the original?, mine is 3 revisions back in the list.
Probably would need a full read..

On other platforms I have flashed the latest version with PCMFLASH. I am sure it is possible with the S4 also.

My car Is a 2012 A6 C7, its on revision 0005 and the latest version is 0010.

Can anyone else confirm this is safe to flash a later revision file with PCMFLASH.

Thanks

I’ve done it before on simos8.4, I had flashed the updated version first to make sure I had correct file and engine ran. I then edited the updated file and flashed, still running. The 2nd flash will write fast because signature matches.


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Ok thanks..Im used to doing bios updates on P.C and sometimes you have to flash the next bios before doing the final one, if there are a few revisions 

DROF = drive-off maps, the ECU will reference these maps for 1 second by default (c_t_drof_gear), unless you are over 50% throttle, and they’re for aiding in taking off from a stop. The DROF assistance can be modified or disabled but no point, as any aggressive take-off will disable the operation.


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Hey all, I'm having trouble making full boost for stock pulley.  2010 S4 M6.

It seems to still be bleeding off boost after 5k rpm, just like the stock map.  I'm requesting 600 nm, but my specified map pressure (map_sp) maxes out at 1732 and falls off from there.

Unless I'm missing something, it seems like "maximum allowed torque at clutch due to torque limitation depending on gear ratio xxxx" is the primary torque request map.  Everything else is conditional, port flap error etc...

The max manifold pressure isn't relevant until your over 200 kpa.

I've built my simos 8.4 definition file off of 8.5, so I'm thinking i'm targeting the wrong transmission. 

I've tried these

0x5B61C
0x5B81C
0x5B6D4
0x5B8C4

Is it not one of these?  Or do I have something else limiting max torque / specified map ?

Thanks!

Check things like ip_maf_max_stnd (4CF20) and ip_pq_scha_lim (4D1F8). There are a few air mass limiters around that area of the 8.4 that may be of interest to you.

Here’s a shot of the torque limiters in that area if it helps:

(https://uploads.tapatalk-cdn.com/20210819/34e7b17929c21ec35db68c3db704c9b1.jpg)

You’re modifying the torque limiters for 3 different transmissions with the maps you’ve listed. Torque limiters alone aren’t enough to increase boost in the SIMOS though so check around the 4Cxxx/4Dxxx area to make sure you’ve covered your bases airflow-wise.

Have fun!

Okay, I think ip_maf_max_stnd is the issue.  Looking at the values, and the aircharge to torque map, that should be limiting me to below ~540 nm, definitely below what I'm requesting.  I'll modify that and relog.

So it seems there is the primary torque request, but that's limited by cylinder air mass max, and manifold pressure max.   And then various conditional factors, IATs and sensor errors.

I'll have to give that INSY-Intake System chapter a better look!  Appreciate the pointers




Right, I realized that.  But only one should be active depending on ECU flag for the transmission.  I believe the correct one is ip_tq_pow_max_mt_4wd[0], which I have as 0x5B81C. 

Looking at the map addresses provided in the screenshot and mtb703 posts, looks like I was able to find the right torque limiter maps for simos 8.4, too. 0x5B61C is "another torque limit map by gear", lol in my xdf file I posted a few pages before. When I did a test run with my file, I also wasn't getting full boost because I didn't know it was airflow limited. Shame I couldn't continue at that time as my engine didn't like a long full throttle run uphill with oil below min and spun some main bearings. But now I'm (another) dsg transmission pull away from continuing and very optimistic, lol) or just fold and move on to something else already.

Just finished my logging, spec map was ~2000 hpa, actual ~1950 hpa for the pull, bypass at zero for the entire time.   So lambda and torque are good, now I deal with knock retard.  I'm pretty certain that at my 70% ethanol content, its false knock.  But I ordered TunerNerd's Knock Monitor for some better data.

What maps need altering for E85 tuning, I had a go myself a while back and had check light and limp mode..lol.

I get that at 85% as well, primarily at low load right?  Which is why I backed down to 70% ethanol.

Once I get everything squared away, I plan on going back up to 85% and resolving the issue.  Maybe bumping rail pressure to compensate for the needed increase in mass flow.

I had not travelled far after the flash , got on a slight incline and bam it falls on its face.. I have tuned the fuel pressure at higher loads.

Right, i've had it happen probably 10 times or so.   A couple times going uphill, most of the time just maintaining freeway speeds ~75 mph.

I've logged it several times, low side, high side, duty cycles.  Everything looks good.  The vcds error is "Bank1; Fuel Measuring System 2".  I can't figure out what specifically this is.  It sounds like either the low or high side pressure sensor.  But I can't think of any reason a fuel pressure sensor would have an issue with high ethanol content.

It seems to be a common issue with the EPL e85 calibrations.  And looks like it was never resolved. 

https://www.audizine.com/forum/showthread.php/711492-More-Fuel-Issues-P1093-quot-Malfunction-quot?highlight=P1093

Have you datalogged and checked HPFP duty?


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Yeah, with vcds.  At line 209/210 is when it happens.   Seems the duty cycle drops out to zero before specified drops.  Is that happening due to the limp mode trigger, or is it the cause of the limp mode.  Don't know.

https://docs.google.com/spreadsheets/d/1HirHVTqRZ6Vnhcsay2MFG3ZeywW9l8cjWyY1ZwVIm8k/edit#gid=0


Since then i've gotten a much better logger, (034) and I've now bumped rail pressure up 15% across the board, in all maps.

Once my current tank runs out, I'm going to give e85 a try again, and log it with more parameters. 

Have you modified the map “constant for stoichiometric air/fuel ratio (c_mff_fac)”? You’ll need to change that single byte map to match the stoic ratio for the ethanol content you’re running. That’s the first thing we modify on our E40 DP tunes (which make 607hp/566tq with a consistent lambda of .82). I can find the map address for it later.

Since the ECU strategy is based around lambda , not AFR, once that’s changed the ECU does most of the work. Following that, take away a bit of fuel, as ethanol will let you run slightly leaner due to the extra cooling effect. Make all of your changes after those are done.

Also, I assume you’re running an upgraded hpfp already to flow that much content? Ethanol requires a much higher fuel volume for the same amount of power as gasoline, so you’ll easily run into knock/lean conditions with a high content like E70.


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This one?

Basic_INJ_mass_for_HOM_MOD__7035: ""Basic injection mass for homogeneous mode""
Constant for stoichiometric air/fuel ratio (=1/14.7) (c_mff_fac)

C_mff_fac is correct. Edited my previous post. You can find lookup tables online for the different stoich values of various ethanol contents. Simply plug that value in and run some logs


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Yes, of course I modified stoich FAR.   The issue seems to be resolved by bumping rail pressure.   Don't know the exact cause, leading theory now is that I was maxing out the injection window in stratified mode.   I don't care enough to go back and verify, but if anyone else has this issue, that's what I'd look at.   Although I'm not sure how you measure the duty cycle during stratified injection.

Full load pulls (homogenous mode) were never an issue.

I'm back at it.  I've got PCM Flash and a j2354device from Autel.  Picking up a laptop tomorrow to install the software and drivers and see if I am able to read the ECU file.  I will report back with my ECU File.  Hopefully sometime in the next week.

I can confirm PCMFlash works with Autel J2534 device to read and write to SIMOS 8.5 ECU.  I was able to perform a virtual read and then write the bin file back to the ECU.  Everything went smoothly and works as expected. 

Now that I've got the BIN file, I am not sure what to do with it to disable SAI.  Does anyone have any idea?    BIN file is attached.

Read the book? It's written in english. One of the easiest booked to read and interpret.

The Simot8.5.pdf file?  The one that is 171MB?  I found a lot of info on SAI but not sure where it needs to be changed in the bin file.

Take a look at the conditions required to enable SAI, and change them so that the conditions are never met.

Really depends what you’re trying to do though. Are you trying to remove SAI from the car completely? Or just get rid of the SAI low flow faults caused by cylinder head carboning?

If you remove it completely you will have to disable the conditions as well as find and remove a few faults for the SAI solenoid and pump being open circuit.


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Actually it's enough just to do the correct switches.

Hello guys,

i enjoyed reading this whole thread very much and i am happy this exists.
I started tuning my freshly bought Audi S4 B8 and for the start I oriented on simple Stage 1 file is received from a friend who got it from a file service. Now i want to optimize the file and try to gain more HP. It is planned to put in a Single pulley.

I made a pull and logged with VCDS:
(https://i.ibb.co/kG2Tr8Q/S4-Pull.png)
 
I have some question or discussion points:
- In the top rpm range it reaches a max of 1997 hpa or mbar Boost. In your experience, can a higher boost be achieved with a stage 1 setup? Somewhere i read something of 2100 or even 2240 mbar. The targest boost is at 2100 mbar - it propably isnt reached because the bypass valve isnt opening enough?
- The ignition seems not to be maxed at all. 16,5 deg of ignition is not that much, right? How much would you say it can be incread for example with 95 or 98 Octance gas.
- Lambda seems to get pretty fat up 6000 rpm with 0,76. I had my Mini Cooper S at 0,80 lambda.
- Someone knows the value "Kompressorregelklappe: PWM Ansteuerung" - it propably is not the bypass of the super charger right?
- "Saugrohrdruck: absolut" should be the current boost, right? And "Ladedruck: Sollwert - MAP_SP" is the target boost i reckon.

Can you give a advice for other more useful values to log in VCDS (for example Zündwinkelrücknahme and the real value for the charger bypass valve).
Thank you guys, i am looking forward to a cool discussion and some gained ponies :)

Start by learning how an engine works and how the hardware on your engine works before trying to log the car or do anything with the ECU.
As it stands now you have no clue. What do you expect to accomplish with software when you don't understand hardware?

Thank you for your answer. I know how engines work.
Tuning gas engines is a relatively new topic for me. The only gas engine i tuned is my mini Cooper S. Instead of 174 ps it now got approx 230-240 ps (ori 24s 100-200 kmh measured with dragy, now 13,8 sec). The mini got 20 deg of timing and a peak boost pressure of 1.7 bar (without athmo.)
I have got more experience with diesel engines. I tuned my 330d f30 in the last 2 years (daily and project car): it now got 492 hp and 925 nm and runs 8.14 measured with dragy from 100-200. the software i did myself and also the hatdware mods (m550d pump, new injectors, downpipe, turbosystem turbo based on gtb2256 and so on).

Ps.: nice to be insulted first thing after becoming a new member in a forum.

Boost is determined by the size of the supercharger pulley, just as on your Mini Cooper. That being said, if you log the car stock you will see that much of the factory boost (12.4psi) is bled off at the top end. You can limit this bleed off by modifying the appropriate torque and airflow limiting maps. I’d start with getting a hold of the SIMOS FR and understanding how the airflow and torque interact, and it will become clear which maps need to be further modified to achieve your goals. I’ve seen the file supplier tunes for this ECU and they modify WAY more maps than what is required, some of which make very little sense (such as raising the pressure limit before the supercharger, showing a limited knowledge of the ECU logic).

The timing maps aren’t black and white on this ECU either. There’s a reason they’re called “additional reference angle” maps.

Do some FR reading first! They are very rewarding ECUs to tune, and very simple changes go a long way.

Bill


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Bill, thank you very much for your helpful answer and your advices. My Mini R56 got already a turbo - the old one R50 was the one with a supercharger.
I got the Simos 8.5 FR and had some looks in it. Will definitive study it much more. But i have got to say that the Bosch Med17 and EDC17 FR were better documentated and written, compared to the Simos FR - but of course it will work. I am happy that i have a FR i can look into.

I analyzed the changed maps in the currenta Stage 1 map. This are the maps (if interesting for someone:

- Higher Boost / Air flow -> Supercharger basic volume flow (was increased highly)
- Higher Air mass -> Maximum intake air of the engine at standardized ambient pressure for different valve lifts
- Lambda -> Lambda full load enrichment, Basic map for LAMB_SP_TQ, Basic lambda for the different engine operating point for the exchaus gas temperature model calibration
- Pressure -> Maximum intake manifold pressure for MAF_SP limitation, Limitation of PQ_SCHA, Max. pressure up throttle at standard conditions
- Changed Limit-Maps -> Factor to consider limitations for tia, Maximum allowed torque at clutch due to torque limitation depending on gear ratio by AT, Maximum allowed torque at clutch for twin clutch transmission, Maximum allowed torque at clutch in case of DROF, Torque limitation in case of error of oil pump high pressure stage, Static torque limitation for TCU LIH

Some other changes:
- VMAX off -> Threshold of vehicle speed limitation, Maximal vehicle speed for cruise activation
- Higher engine speed RPM -> Dynamic engine speed limit, Engine speed limit depending on oil temperature, Engine speed limit in case of CRK error (the both last i don't like, because this are useful engine protection limits - will change it)
- Ignition -> Basic Minimum ignition angle
- Higher exhaust temps -> Basic engine out exhaust gas temperatur for reference conditions, Basic engine out exhaust gas temperature for reference conditions
- Fuel pressure -> Fuel pressure setpoint for homogenous engine operation (just marginal increased - for me not logical in a stage 1 map)

I wanted to know what the max. reachable boost level with the standard pully is. I reach currently ~2000 mbar. If for example 2100 mbar is possible, like someone mentioned, then I would know that i can  reduce some more bleed off by modifying the appropriate torque and airflow limiting maps (like mentioned by Bill). Like this i would have a target to reach. I tried to log the bypass valve with the VCDS Value "Kompressorregelklappe: PWM Ansteuerung" in order to find out if a bleed is still going on, but it seems to be the wrong value.

Jürgen

The SIMOS is a great ECU and in my opinion is easier to work with than the MED ECUs. The 8.5 is a well written FR and once you get familiar you will be able to find everything you need.

The value you need to log is RFP_AV. That value should flatline to zero once you reach WOT (or at least full load detection as identified by id_pv_av_fl in your maps)

Maximum pressure up throttle at standard conditions is an example of what I was talking about; a map that doesn’t need to be modified. You’ll notice that it’s below 1 bar (atmo) from the factory. You’ll also notice that the TMAP sensor that corresponds with that value is located before the supercharger, after the throttle body, and will therefore never see positive pressure.

Simple is best with this ECU, change only as little as you need to. Start plugging map IDs into the FR with the ctrl+f function and make sure that the changes are meaningful and see how they impact each other. You’ll be surprised how little you need to play with to get what you want out of a Stage 1.


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I'm sorry but I don't think I am being clear enough.  All I have is a bin file.  Are you under an assumption that I also have a DASMOS or map pack?

Then you are going to have to get one, some stuff is posted on the forum, other not.
There are many places that will sell you one.

If you only need to disable SAI it will be much cheaper to pay someone who knows what they are doing to do your file, rather than doing it yourself...

To disable SAI properly you need to:
1. Turn off SAI diags (lc switch)
2. Turn off pump/valve diags (lc switches)
3. Turn off cat heat (eg atmospheric pressure condition)
That's it.

All those are single values, and especially the switches will be challenging without a damos that's semi-close to your file.

There was an excel spreadsheet posted in this thread earlier, it has many maps, their conversions and coordinates. It should be very useful to you since it was also for simos8.5. You can create an xdf file with maps of interest manually using that file and modify your bin in TunerPro. That's what I did, but since my ecu is simos8.4, I had to compare simos8.5 bin with my in (demo) winols. Some maps were easy to identify because there was only one match with identical values, but some maps like MAF limits don't have completely identical values in simos 8.4 and 8.5 so looking at functions referencing these potential maps in Ghidra was needed. Again, you don't need any of that, that spreadsheet should be perfect for your simos8.5.
As for myself, I might be looking for a2l for my simos8.4, really want to come up with my own uds service which will output some of these vars or hijack and existing service 22 id. where do they sell those, lol?

You won’t find an a2l or actual damos for simos8.4/8.5, the closest you’ll find is a full mappack for both ecu models and a FR(functionsheet) from continental for simos8.5. If your looking to decompile, either get the vag FRF or a complete boot read. I think Autotuner was playing with a boot option that was in beta, otherwise you might be able to use the bench mode read and unzip the complete backup, although it won’t have everything.


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pcm flash virtual reads are obtained by decompressing the frfs, there's no sboot section there, of course (btw, there were some threads on simos 12 and 18, these show how to decrypt the frf files into odx, lookup @bri3d posts. I posted in one simos 12 thread how to "decrypt" simos 8 odx payloads. But sboot is not actually needed to look at the asw part, and I do have a simos8.5 full read generously donated to me by the guy whose 4.0TT swap some vendor you know is trying to appropriate so hard.
It will be somewhat disappointing if a2l with ram locations doesn't exist, on another hand, combining several more or less relevant uds 22 vars into one still could be a good exercise for me.

quick update - I was able to port bri3d's simos18 exploit to simos8.5 (needs more polishing and instruction writeup before I publish it on the github) and recover flash passwords in ebay ECU I got. attaching what I was able to read from it. Will still need to port this to simos 8.4 (just need some public rsa key from it, basically).

couldn't change the attachments in the previous message so zipped them all together (sboot, cboot, asw and cal) and posting here

see http://nefariousmotorsports.com/forum/index.php?topic=19183.msg154284#msg154284 for the link for the exploit github repo, so yes, now you can read and write to these ecus in boot mode for cheap.

If you need SAI disabled or anything else just send me the file and I'll make the mods, I'm not making anyone go-fast files for free though, it's still my living after all  ;)

I have (or can make) mappacks for most SW versions if anyone needs as well.

Bill

Any pointers on disabling specific DTCs?  I have a very small leak (P0456) in my EVAP system, and the replacement parts are $400!    I'd rather not disable the whole system, as i'll probably fix it eventually.  I believe the configurable data is under "ERRM_DTC_Management", but I'm having a hard time discerning which address, then what to modify.   SIMOS 8.4

Best pointer I can give you is fix the issue, you’re going to have to do it eventually anyway, just get it over with or deal with the light for a bit until you can save up. You never know if it will cause another issue such as a rich condition or intake leak (such as in the case of a bad purge solenoid).

Which software version is your S8.4? In 551D 0003, the error class tables start at 69B90, and repeat DTC table, additional info, freeze frame, and failure class. If you can’t disassemble, you’ll have to take your time and look at the map ID for hints on what you need to kill if you still want to pursue that option. The other option as you mentioned is to disable fault recognition for the evap system.

Have fun!


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Yes, 0003

I don't actually have to do it eventually, no emissions testing or checking of any type here.   

Okay, yeah, I was looking there, at DTC Management and Error Management.  Knowing that's the right area, I'll keep digging away.  Thanks

edit - think i found it, 6AC64 & 6AC50.  Now I'll stop being lazy and read the FR on this section.

How does one could achive pops only on dynamic mode?
ip_iga_min_bas_cbk_sel[0][0]
ip_iga_min_bas_cbk_sel[1][0]
ip_iga_bas_cor_ivvt_vvl[0][0][0]  (all of them)
ip_n_min_puc_at
I assume, altering those would give me pops all the time.
But how to toggle normal/dynamic?

I haven't figured this out either, but I know you can make it pop using minimal timing tables. It's weird how simos 8.4 doesn't have impulse maps :(

Pops in dynamic is only possible in S8.5 as far as I can tell. If you have an a2l search for this folder ENOS_Backfire_Operation_State: "ENOS_Backfire_oper_STATE-AE501Z01.00F-xxxxxx-SIMOS85-xx-JJMMTT" the bitmask by driving mode is typically configured correctly from factory the module is just not enabled at least in D_0004. There will be a few inverted conditions that you need to correct as well as the shut off pattern and times. Only things outside of that folder are the timing maps for impulse combustion.

I have not seen that folder in any of the 8.3/4 variants. It is literally the same as you will find in Simos18  :)

Hi, I would like to ask about simos16 which seems to be very similar to simos8, but I am struggling with not closing of bypass flap when WOT.
Its CREC engine, sw SG100F1000000

I attach screen of log and list of map which I changed. Is tere any limiter missing or I have to manipulate some airflow maps? Ori file also attached.

I've checked tcu for torque limiters but it seems all of them are above 600Nm so shouldn't be a problem

Does anyone out there have a dual pulley simos 8.5 tune that they can share the bin file? cost? let me know.

 I Bought a tune before covid hit from Chris at EPL for my 2012 C7 A6 and have only recently installed the supercharger and crank pulley
along with a Merc Racing charge cooler. I go online to flash the tune and it's not there. 
Chris from EPL, Reply Email saying to contact support.
So, I contact support and The EPL site bounced back my messages.
Not much I can do I suppose.

The car is faster with a single pulley than with two pulleys.
With two pulleys it's only faster if you have WMI.

Your charge cooler will not do anything, because the problem is the size of the heat exchanger in the manifold, which can not cool down the incoming air.

Thanks for the insight, have a great Christmas.

Or ~40% ethanol.   

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Yes, a lot of ethanol helps too, because it works the same way as WMI by cooling down the charge in the ports and getting better cylinder filling.

But on pump gas absolutely pointless.

Can Anyone convert this to a readable bin file? I would just like to see what the changes are to the file. Thanks.

Hpt to bin splits it into 3 parts ..

After some reading on this forum I've managed to write my own tune, with some help of a paid file (that was actually quite badly tuned...)for reference. So...thanks all!

Purely for amusement / can I get it to work I've also tried to get pops and bangs to go. And guess what, I got it to work!
But...
I should be getting "DSG" farts given the way I've modified to file, but there are no pops and bangs during shifting.
And the pops sound quite like actual popcorn. Loud enough but sounds like someone is rattling a little rock in a tin. While I am going for something more burbly.

Any pointers?

In addition to my previous post, I'd like to add to the discussion/knowledge in the thread.

I have to agree that tuning this ECU turned out to be straightforward. Note that I have limited previous experience in moder ECU's.
I've found a thread on hptuners that helps to put the different maps and needed changes into logical order.

From pedal to the wheel, this is said to be the processing order of things. Thanks to GarageBill over for sharing this knowledge at hptuners.

• -You press the accelator pedal, which is converted to a percentage/factor
• -This factor is used to come to a requested engine torque via the "torque at clutch" maps
• -The resulting torque is used to determine a setpoint for requested intake air mass using the setpoint mass airflow (it converts nm to mg/strk)
• -Now the hardware needs to do its thing to get to that setpoint and make the requested torque. Thats done by all sorts of subfunctions like ignition timing manager and the intake flap controllers. Which I don't think you need to touch for a straightforward tune.
• -The actual intake air determined via MAP; converted to mg/strk; is then converted back into nm using the indicated engine torque maps. This is relevant for, among other things, your transmission.
  

Along the way its necessary to raise certain component protection limiters, mostly for air or exhaust temp, all of which have been mentioned here before.
As far as I have been able to determine pressure upstream throttle and supercharger flow are not limiters. So don't need to be changed.
Timing and air/fuel ratio should be changed as well for more power or more safety margin.

While I'm oversimplifying things, tuning is getting more air and fuel into the cilinder. Requesting more torque and raising the air limiters seems, at least in my case, to keep the supercharger recirculation flap closed.

Making a tune that really uses all margins in stead of say the 90-95% gains from a simple tune takes a lot more effort and knowledge. If I had to guess, thats why some tuners don't mind sharing the basics but are reluctant to post their more advanced files. Makes sense to me, at least.

Any corrections and additions are welcome, of course.

Hello, anyone have mappack for this simos 8.4 ecu ? Thank You :)