NefMoto

Hi boys, I often follow your discussions from which I learned a great deal. But I tried in every way to solve a problem on my car but I couldn't.

My car has a full stock k04 turbine, Pipercross intake and direct exhaust. My car goes well enough but the moment I put it in the Boost I realized that it closes the throttle valve that drops to 37% of opening, only to gradually reopen when the turbo pressure drops.

Would any of you know how to give me some advice to eliminate this limitation? I am attaching my map, I hope someone can help me and I hope to learn new things from you. Thank you so much.

Please obey forum rules.

Moved.

http://nefariousmotorsports.com/forum/index.php?topic=12361.0title=

exscuse me i didn't know forum rules. I haven't log because my vag don't read effective boost pressure. I have 4 bar map sensor on my car and vag read Always 2550 bar but not effective.
 i thought that someone of you can help me for solution or at least can explain to me how to get there. thanks

So read them. They even say "read before posting", where "before" means "before" :P


which is why the forum rules you didn't read say to use ME7L and not VCDS.


If you provide the information as outlined in the forum rules which you didn't read, odds are higher that somebody can help you. If you don't, the odds are, well, zero.

his irl and ldrxn is 330. i wouldnt even bother replying any longer.

for this I ask you for help. Then the Mirl was brought to 330 just to see if it then didn't cut the throttle. First it was at 290%!

From what I know the specific load is calculated: Specific Load * 10 + 300= then 290 * 10 +300=3200 - 1000 atm=2200 mbar
I have 2200 mbar of boost pressure! But my throttle valve cut!

I didn't know about M7L, but which interface do you use?

Have you actually read ANYTHING here?

I swear I am going to fucking delete that from the S4wiki if you all refuse to read the rest of the section.

It says right there "Keep in mind, this is a rough approximation. It can be off by as much as 30% or more."

i would like think the better part is the fact he states he has 3200mbar pressure, 2200mbar boost. 31.9psi, from a k04.

yes I have read a lot of your discussions, the problem is this, I am Italian and I always have to read them through a translator so often I can't decipher well what you write.

However my K04 makes a peak of 2.2 bar really in boost. As soon as I can if you want to publish a video.

I just want to learn something more, also because most of what I know I learned thanks to you. I am sorry that I am being treated so sincerely. However last night I downloaded the program that you provide for the log, but I don't know if it can work with the interface I have.

a KO4 is hairdryer at 2.2 bar boost. also you are way over the turbine shaft speed limit with that. If you want higher power levels and lower shaft speeds you need a bigger turbo.

2.2 absolute or 3.2 absolute?

You may want to check that compressor map.

And if you really need to run 3.2 bar you had probably better do the 5120 hack.

they are at 3200 absolute peak bars, after the boost pressure stabilizes at 1.8.
if I'm not mistaken the compressor map is the KFLDHBN right?

Yaaay

No, the compressor map for K04s.

3200? Seriously? Are you sure about your numbers?

So you are totally clueless, need a map pack or a damos for your file, and yet *somehow*, you've managed to modify A TON of things in that file, that would be unpossible to modify properly without a damos. So what the hell is going on here? what aren't you telling us?

absolutely guys I won't hide anything from you. Then I'll explain more clearly how things are. I have the damos for my file and I made all the changes doing tests on proofs and reading your forums. But now I have reached this point, the throttle valve chokes me when the car overboosts at 2200 mbar and I can't solve the problem in any way

open a pizza shop instead

And you determined you can't solve the problem without logging using ME7L?

Nye come on man! How would he use ME7L on a MED17.5 ECU?

hi guys, then I proceeded to make a small log, unfortunately for now I can not do anything else because here in my part it rains a lot and therefore it is dangerous. As you can see the boost pressure is not the law, but it stops at 2550 mbar, but from the log you can see how the butterfly closes and then reopen above 5000 rpm. I'm trying them all, now I'm sending you another map with which I logged. I thought I had found a torque limiter at the end of the map I tried to put it to the maximum but instead nothing does the same problem.

then guys I would like to recalculate KFMIRL for good.
I read that to calculate it you have to do MASS MESSAGE / MASSA STANDARD.

The problem from what we see in Log is at 3000 rpm, at 3000 rpm it ingests about 240 g / s of air, so I do this operation


[(240 * 60/3000 * 0.5)] / (cc 496 x 0.00122521)

The problem is that I get a wrong value, where am I wrong given that I get out 16? Can you help me?

jesus

https://nefariousmotorsports.com/forum/index.php?topic=4094.0title=

Please at least try to follow a single rule

This is the least of your problems.

sorry, the rules are many, I posted a fixed file thinking to do well and be more pleasant.

LULZ

Hi guys, I thought maybe my problem could be too much difference from the requested boost pressure and the actual boost pressure. In order to have a different boost request would it be right to intervene on the KFPED?

What. The. FUCK?

How on earth did you get that impression.

The s4wiki outlines EXACTLY what goes into requested boost.

I'm sorry, I don't understand why you always have to respond in this rude way. I'm asking questions with education. I have read dozens of times s4wiki on the tuning page, but I have not understood how to outline the request for the boost, and based on what is precisely calculated. There are dozens of acronyms and with the translator everything becomes more difficult. Can you explain to me roughly?

requested boost based on req load
if you read s4wiki/nef and asking how to req boost with kfped then its just not your thing
rly
save your time (and nyets mental health)

then I understood correctly, in practice the more specific load is requested and the more there is a request for the turbo. In fact, in the previous map I had tried to increase the KFMIRL values, reporting everything even on KFMIOP but to no avail, in practice the car always requires the same boost pressure. In addition to these two maps should I intervene on another to increase specific load?

LDRXN and KFLDHBN

Again if you properly read the s4wiki , it says right there that there are basically 2 ways to request boost. The one Nyet posted ( ldrxn and HBN ) is the one that most prefer people I guess. Go read s4wiki again.

I understand his frustration if he's trying to use google translate to figure things out, but trying to walk through this in English here can't be that much more productive.

I dont think hes using google translate though.

yes guys I use google for translations because I'm Italian. However, I have already used KFLDHBK and LDRXN on my map. In particular, the first is set at maximum while the second is a limiter on a specific load, which in any case is higher even than it should, but the request is always low.

Unfortunately, since ME7L can't be used to log your ECU, I'm not sure what else might be limited your load. Maybe others can comment.

Post screens of HBN and ldrxn.

Here's my KFLDHBN and LDRXN guys.

How about IRL

here is MIRL E MIOP

no advice guys?

hi guys, then I did other tests and I realized in practice that the request does not exceed the fateful 2550 bar that they say is a MOTRONIC block, is there any way to circumvent this type of limitation by chance?

I was reading Hack 5120 where in practice on several maps the factor by 2 had to be divided,

There is ZERO reason for you to request more than 2550 bar.

Why? I have 3000 mbar of absolute boost, but by request I don't exceed 2550 mbar, couldn't this be the problem for which the butterfly valve closes?

if  your boost is above 2550 mbar you have no boost control. This is the limit in ME7.

I have 4 bar sensor and almost all the boost maps unlocked at 12.5 seconds. Mine, however, is a med 17.1.5 maybe maybe it's a little different.

LOL