NefMoto

Technical => Reverse Engineering => Topic started by: Raven_T on November 02, 2016, 12:14:27 PM



Title: Ignition cut rev limiter me7
Post by: Raven_T on November 02, 2016, 12:14:27 PM
Hi

Is there a way to get an ignition cut rev limiter instead of the Original (fuel cut?) on My me7 1,8T? I can't find anything on the Internet or Forum...

Best regards


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 03, 2016, 12:48:18 AM
Coil dwell time. 


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 03, 2016, 01:01:15 AM
KFSZT and/or FSZTM?


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 03, 2016, 01:05:25 AM
According to http://nefariousmotorsports.com/forum/index.php?topic=445.msg31139#msg31139 neither is used in ME7 (CW_FUBND=0)

Might need to do some more digging.

Never thought about using that for a rev limiter outside of AL/NLS

Would be absolutely insane to do it w/o also cutting fuel at redline.



Title: Re: Ignition cut rev limiter me7
Post by: sonique on November 03, 2016, 03:05:03 AM
KFSZT and/or FSZTM?

KFTSRL and KFSZT
need both map


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 04, 2016, 02:05:07 AM
Mhmm.  I've shifted the last column back basically and set the RPM to -50 of my limit.  Then set dwell to 0 at my limit.  Limiter bash all the things. 


Title: Re: Ignition cut rev limiter me7
Post by: prj on November 04, 2016, 03:53:33 PM
Don't forget FTOMN.


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 05, 2016, 11:10:00 AM
Mhmm.  Mine's set to 0 anyway because AL.


Title: Re: Ignition cut rev limiter me7
Post by: fukenbroken on November 05, 2016, 11:42:43 AM
well
i was trying today this stuff

setting KFTSRL & KFSZT last column to 0
and previous column to stock values
last 5000, previous 5450
no sense, engine running up to NMAX = 6200
okay
after that i change FTOMN to 0
fuse blown after 200m cruise (<3000 rpm)

and most interesting thing to me, in code KFSZT is called only if nmot_w < 1770h (1500rpm)
its a hard asm value, not a map
ive check other software when i have a time
* 06A906032DR file btw

now what is a dwell time? is it charhe time or time between charges (this explains why 0 value blowns a fuse)


Title: Re: Ignition cut rev limiter me7
Post by: contrast on November 09, 2016, 12:46:09 PM
Interesting topic. So does it work with the mentioned maps?


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 09, 2016, 01:11:12 PM
BTW I will definitely add a section to the wiki if somebody provides a working method, especially in regards to the safety of setting FTOMN to 0.

Thanks to all here that are participating.


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 09, 2016, 02:38:47 PM
I'll go over my file when I get home, but mine definitely works.  Was using today. :) 


Title: Re: Ignition cut rev limiter me7
Post by: contrast on November 09, 2016, 02:50:52 PM
I'm only ask cause I would consider testing it, but it's a Volvo and only way is asm, so I'm interested if these maps do the trick so then I can start to define them.


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 09, 2016, 04:07:43 PM
I'm only ask cause I would consider testing it, but it's a Volvo and only way is asm, so I'm interested if these maps do the trick so then I can start to define them.


I also assumed ASM was required for ignition cut to work (in particular, so zeroing FTOMN didn't have side effects).


Title: Re: Ignition cut rev limiter me7
Post by: teobolo on November 10, 2016, 12:30:50 AM
So to make it clear for me and other memebers if you set FTMON=0 and make the changes to the KFTSRL & KFSZT like i have make in the picture i attach is all we need ??

(https://s14.postimg.org/fmbbus7hp/hardcutme7_5.png) (https://postimg.org/image/fmbbus7hp/)


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 10, 2016, 12:57:41 AM
No.  Read the axis, you've set dwell to 0 at 18 volts and 7k.  Simialrly, will you hit more than 165% load at 7k?  What is your limiter?

I'll post mine when I get home.


Title: Re: Ignition cut rev limiter me7
Post by: teobolo on November 10, 2016, 01:13:47 AM
MY rev limiter is set at 7000rpm thats why i change the last column axis to 6960...


Title: Re: Ignition cut rev limiter me7
Post by: teobolo on November 10, 2016, 01:17:37 AM
MY rev limiter is set at 7000rpm thats why i change the last column axis to 6960....


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 10, 2016, 01:47:52 AM
Remember interpolation..


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 10, 2016, 01:52:43 AM
Remember interpolation..

so make sure it is a real step function (or as close to it as possible)?

5999.9 non zero
6000.0 zero?

Is that the trick i've been missing?


Title: Re: Ignition cut rev limiter me7
Post by: teobolo on November 10, 2016, 01:58:56 AM
Better know ???


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 10, 2016, 02:08:13 AM
so make sure it is a real step function (or as close to it as possible)?

5999.9 non zero
6000.0 zero?

Is that the trick i've been missing?

Mine is a step of 50 rpm, but I might try closer.  It doesn't bounce as much as I'd like.   


Title: Re: Ignition cut rev limiter me7
Post by: teobolo on November 10, 2016, 02:24:29 AM
Mine is a step of 50 rpm, but I might try closer.  It doesn't bounce as much as I'd like.   
I think it should help to change DNMAXH from 200rpm to 50rpm .


Title: Re: Ignition cut rev limiter me7
Post by: telnet402m on November 10, 2016, 02:48:20 AM
Could you post a video with result?


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 10, 2016, 11:25:07 AM
Well, if you really want no interpolation, you should make the axis value one apart (in unscaled values).


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 10, 2016, 02:15:47 PM
Well yeah; you don't want interpolation because you want dwell to slam to 0 so no spark?


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 10, 2016, 02:39:13 PM
Going to try these tomorrow.  :)  It's hard to get a video and limiter bash in 2nd and hold the wheel.


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 10, 2016, 03:58:33 PM
What is the minimum step on the rpm axis?


Title: Re: Ignition cut rev limiter me7
Post by: nubcake on November 10, 2016, 04:51:27 PM
What is the minimum step on the rpm axis?

Usually is 40 for 8-bit values. Looks like it's 40 here as well.


Title: Re: Ignition cut rev limiter me7
Post by: nyet on November 10, 2016, 04:59:12 PM
In case it wasn't clear, I still don't think a spark only cut limiter is a good idea. For those reading this thread that are noobs, DO NOT attempt, you are risking serious valvetrain (or worse) damage.


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 11, 2016, 12:36:45 AM
Mhmm.  That said, my stock head was holding this abuse plus NLS/AL every few days for 3 years.  Stock turbo too.  No damage to fins, no lack of boost, no damaged valves when I pulled the head.  People worry a lot; but if you can fix it, why not?


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 11, 2016, 09:36:03 AM
This can be stickied.  Those settings work pretty damn well.  I don't have a video, it's too hard to hold onto a FWD spin in 2nd in the wet. 

Someone else can try it and LMK. :)


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 13, 2016, 11:07:38 AM
https://www.youtube.com/watch?v=T8pFU-oZ3Pk&feature=youtu.be

Have a video. :)


Title: Re: Ignition cut rev limiter me7
Post by: contrast on November 13, 2016, 03:59:28 PM
Sounds legit!


Title: Re: Ignition cut rev limiter me7
Post by: vwaudiguy on November 13, 2016, 05:47:51 PM
I like this one. Lol. Looks like all fucking hell's breaking loose.

https://www.youtube.com/watch?v=IW5COieCR88


Title: Re: Ignition cut rev limiter me7
Post by: fukenbroken on November 13, 2016, 06:09:52 PM
ok i got it. the problem was e_lm active because of mafless
https://youtu.be/NujUfLReBAI

KFTSRL, NMAX

KFSZT irrelevant here. its hardcoded in asm to be used only below 1500 rpm
i`ll try different values later


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 14, 2016, 01:01:36 AM
Decent. :) I need to learn how to IDA properly.


Title: Re: Ignition cut rev limiter me7
Post by: TijnCU on November 14, 2016, 03:09:22 AM
Cool stuff, this makes a burnout so much more interesting  ;D


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 15, 2016, 12:44:35 AM
https://www.youtube.com/watch?v=Khdv8bsN9fI
https://www.youtube.com/watch?v=_pO99FeIYFk



Title: Re: Ignition cut rev limiter me7
Post by: TijnCU on November 15, 2016, 07:34:44 AM
Did you place both NMAX and NMAXOG above the 0 dwell rpm?


Title: Re: Ignition cut rev limiter me7
Post by: fukenbroken on November 15, 2016, 08:00:48 AM
+ 50rpm for me

also we should play with KFZWMN / KFZWOP areas i think


Title: Re: Ignition cut rev limiter me7
Post by: TijnCU on November 21, 2016, 09:04:16 AM
https://youtu.be/0Jn13D0iWeo  ;D
Pops really good. Poor valvetrain  :)


Title: Re: Ignition cut rev limiter me7
Post by: adam- on November 21, 2016, 10:57:44 AM
You need to teach me how to IDA! :)


Title: Re: Ignition cut rev limiter me7
Post by: Silencesilja on February 15, 2017, 06:30:39 AM
first day into hard limiter,and she gives you this look..


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on February 15, 2017, 06:35:07 AM
first day into hard limiter,and she gives you this look..


Yeah this'll do that to a old rusty stock exhaust, and it'll melt/damage your cat :)
use it as a good excuse to get at proper stainless system ;)


Title: Re: Ignition cut rev limiter me7
Post by: Jim_Coupe on February 15, 2017, 07:49:50 AM
Hehehe lol :)


Title: Re: Ignition cut rev limiter me7
Post by: bobg on February 19, 2017, 03:56:35 PM
hey everyone,

Trying to get hard limiter working but i cant seem to find and xdf file with proper locations to make adjustments. I have 8e0909518f ecu. I cant find kfszt and kftsrl if just all 0. Please help much appreciated, this forum is amazing already got my boost where I want it and cars running great just need some pop pop bang bang  ;D.

thx


Title: Re: Ignition cut rev limiter me7
Post by: PissedOffUser on February 22, 2017, 03:02:28 AM
hey everyone,

Trying to get hard limiter working but i cant seem to find and xdf file with proper locations to make adjustments. I have 8e0909518f ecu. I cant find kfszt and kftsrl if just all 0. Please help much appreciated, this forum is amazing already got my boost where I want it and cars running great just need some pop pop bang bang  ;D.

thx

I dont know which SW you have, but if you have 1037363670 - your addresses are the following:
FTOMN @ 0x1A7BE, size 1x1, 8bit, factor 0,1*eprom
KFSZT  @ 0x1A892, size 8x8, 8bit, factor 0,1*eprom
KFTSRL @ 0x1A8E7, size 10x9, 8bit, factor 0,1*eprom

Attached a few screenshots and a .csv with map-data.


Title: Re: Ignition cut rev limiter me7
Post by: bobg on March 16, 2017, 08:43:35 AM
thx for reply not sure how i would know sw. But i'm pretty sure ftmon for me is at 1a775 it shows 5. One xdf file i have shows at 1b2ac which is incorrect and where you said i think is incorrect also as it show up 0.


Title: Re: Ignition cut rev limiter me7
Post by: PissedOffUser on March 24, 2017, 11:44:19 AM
It would help to upload your file..


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 19, 2017, 08:47:30 PM
Good evening guys !!!
I set my limiter to 7100 rpms, but the cut comes at 5800 rpms.
Could anyone give a hint how fasso it limit to 7100 rpms?
In this bin I have active AL / NLS.
Very grateful for any help.


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 19, 2017, 08:54:53 PM
Ops! Xdf wrong.
I have set up the rpms columns of kftsrl as indicated in wik and here too. Best column kftsrl at 7100 and penutima at 7060rpm.
sorry.


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 20, 2017, 07:50:03 PM
Same result.
Limiting to 5800 rpms.
How to reach 7100 rpms?
What am I leaving behind ??


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on July 20, 2017, 11:19:19 PM
What is NMAXOG set to?
Can you upload a screenshot of your new setup?


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 21, 2017, 03:19:39 PM
Here is the capture screen.
a question.
I have not changed the axes of the kfzw maps.
Will this be my mistake?
In doubt, I will change everyone and see the result.
Thank you very much for your attention.


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on July 21, 2017, 03:27:26 PM
What about KFSZT?


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 21, 2017, 07:49:42 PM
Had changed in another file with the same configuration of the kftsrl axes and with the whole column in 0.
But even so the cut came at 5800.
As in wik did not mention about kfszt I decided to leave original for a test.
When the first or second gear pulls off the bursts !!
More in a higher gear limits to the 5800.notei q is tied past the 5000 rpm. strange behavior.
It would not be the case to interpolate the kftsrl axis with a difference smaller than 4000 rpms to 7060 rpms.
Type per line of 6000 rpms in place of 4000 rpms?
I'm going to test that tomorrow.
 thank you


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 21, 2017, 08:49:17 PM
I'm going to take a test with that.


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 22, 2017, 07:15:00 AM
Same result.


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on July 22, 2017, 07:55:05 AM
Try setting fuel cut 100-200 RPM higher than spark cut :)


Title: Re: Ignition cut rev limiter me7
Post by: adam- on July 24, 2017, 03:58:01 AM
You want to cut spark before you cut fuel.

Lift your NMAX.

Read the maps you're editing and don't just throw numbers in because someone else did the same thing.  Try and understand what you're attempting to do.

You've lifted error detection to 7500 for no reason.


Title: Re: Ignition cut rev limiter me7
Post by: cpp on July 25, 2017, 09:17:26 AM
I raised nmaxf 400 rpm to more than nmax. It was the difference between nmax 6800 and nmaxf 7100. I did it because in the original bin it was at 7100 which would be my new nmax. So I added another 400 rpm to nmaxf.
I have 7100 rpm in the soft limiter. I wanted to have that same 7100 rpm with hard limiter.
I did a nmax test at 7300 rpm. More so cut at 5800 rpm.

Thank you for the tip


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 08, 2017, 09:04:36 AM
Sorry for my dumb questions, I never did a ignition cut rev limiter.
Wouldn't it be enough if I just set NMAX higher than NMAXOG like in the screenshot?

What is KFTSRL?
What is KFSZT?

KFSZT is in association with the battery voltage.
Why do I need to change a map which contains the battery voltage? Isn't this unnecessary for a rev limiter?  ???


Title: Re: Ignition cut rev limiter me7
Post by: nyet on August 08, 2017, 08:35:13 PM

Why do I need to change a map which contains the battery voltage? Isn't this unnecessary for a rev limiter?  ???


Read the FR.


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 09, 2017, 01:00:38 AM

Read the FR.

I've read it the 3rd time now, I still don't understand why I need to change this two maps.


Title: Re: Ignition cut rev limiter me7
Post by: nyet on August 09, 2017, 10:49:48 AM
NMAX is the soft limiter (fuel cut).


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 10, 2017, 01:05:35 AM
Thanks  :)
So NMAX and NMAXOG are just fuel cut.
That means, that KFTSRL and KFSZT are involved in ignition cut?


Title: Re: Ignition cut rev limiter me7
Post by: adam- on August 10, 2017, 04:17:03 AM
The concept is entirely based around that.  Cut spark before fuel. 


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 10, 2017, 04:32:44 AM
I understand the concept, it's kind of easy.
My problem is just knowing what the maps are doing. I could just copy your changes, adam, but I want to learn how to do it by myself.


Title: Re: Ignition cut rev limiter me7
Post by: nyet on August 10, 2017, 12:15:23 PM
That means, that KFTSRL and KFSZT are involved in ignition cut?

No, it depends on the ECU.

Not sure how you got this far without reading this:

http://nefariousmotorsports.com/forum/index.php?topic=11664.msg97574#msg97574

and this:

http://nefariousmotorsports.com/forum/index.php?topic=445.45


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 11, 2017, 03:10:49 AM
Not sure how you got this far without reading this:
No need to be rude  :(
"Please do not ask me for tunes. I'm here to help people make their own."

Again: I read the whole thread a few times.
But nowhere is an explanation of what this two maps are doing and what "closing time" is. This thread instantly began with map ID's I never edited.
I just did some basic remaps on 1.8T's and 1.9TDI's.

-I used google to search for an explanation
-I've read and searched through the s4wiki
-I used the search-function in this forum


Title: Re: Ignition cut rev limiter me7
Post by: RBPE on August 11, 2017, 07:27:30 AM
ZUESZ in the Function Sheet ME7.3 as an idea;

1. Introduction:
Sufficient ignition energy must be made available in order that the sparking plug can ignite the mixture. This is realized by
closing the primary circuit of the ignition coil in good time so that the coil can charge up sufficiently.
On the other hand, the closing time shall not be too long as this can otherwise lead to the ignition output stage overheating
(particularly critical for internal output stages).
After closing, the primary current i increases exponentially with time. The period of time from the primary circuit closing to
opening again (sparking) is referred to as the dwell time.
The energy stored in the magnetic field is given by :
W = 1/2 * L * iˆ2 (L: inductance, i: current flowing at the point in time that the primary circuit opens)
2. Calculation of the dwell time:
The dwell time szout is calculated from a map that depends on the speed and battery voltage, corrected by a factor depending on the
engine temperature (from characteristic FSZTM).
3. Dependency of the dwell time:
ub: The primary current i flows through the primary winding of the ignition coil. This is determined by the battery voltage ub
and the resistance of the coil.
nmot: Above an engine-speed threshold, the dwell time is computed as a dwell angle and output at an angle level.
Thus a speed-dependent lead by the dynamics is required here so that a sufficiently long dwell time is still given even
in the event of maximum speed dynamics. The dynamics lead is taken into account in the map KFSZT.
The dynamics lead required is lower at higher engine speeds.
No dynamics lead is necessary in the lower engine-speed range (dwell time output).
It can also be meaningful to have a shorter dwell time at higher speeds for thermal reasons.
tmot: The ignition coil temperature changes with the engine temperature.


Title: Re: Ignition cut rev limiter me7
Post by: RBPE on August 11, 2017, 07:32:25 AM
I like the visual side too! Good for timing/fuel understanding etc;

https://www.youtube.com/watch?v=jdW1t8r8qYc


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 11, 2017, 07:44:01 AM
Thanks RBPE! This makes sense. :)

=> But why is the closing time not 0 by default? I thought a good spark is good for the engine?
=> Why would a long closing time overheat the ignition coil? Longer time => Coil doesn't need to hold that much power => colder coil and a lighter spark??
=> Editing the "closing time"-maps lead to a faster ignition cut, am I right? If not editing them, the ignition cut would be a "long/slow bounce", am I right?
=> What map/value defines the ignition cut?


I like the visual side too! Good for timing/fuel understanding etc;

https://www.youtube.com/watch?v=jdW1t8r8qYc
Thanks for the recommendation, but I know how it works.
I repaired oldtimer motorcycles (mostly 2 strokes) for a few years. :)


Title: Re: Ignition cut rev limiter me7
Post by: 4ringpieces on August 11, 2017, 07:59:42 AM
In kfszt.

Make rpm axis 7000, 7050(change depending on your limiters etc)

Put 0 dwell in 7050rpm row

Works in older me


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on August 11, 2017, 01:02:48 PM
Thanks, now I understand.
0 means the ignition coil doesn't "load" anymore. So if it doesn't load anymore it limits the rpm in the specified row.  :D


Title: Re: Ignition cut rev limiter me7
Post by: adam- on August 12, 2017, 10:44:47 AM
Mhmmmmm.


Title: Re: Ignition cut rev limiter me7
Post by: RBPE on September 05, 2017, 12:54:58 PM
Thanks RBPE! This makes sense. :)

=> But why is the closing time not 0 by default? I thought a good spark is good for the engine?
=> Why would a long closing time overheat the ignition coil? Longer time => Coil doesn't need to hold that much power => colder coil and a lighter spark??
=> Editing the "closing time"-maps lead to a faster ignition cut, am I right? If not editing them, the ignition cut would be a "long/slow bounce", am I right?
=> What map/value defines the ignition cut?

Thanks for the recommendation, but I know how it works.
I repaired oldtimer motorcycles (mostly 2 strokes) for a few years. :)

It's all just relative - if Bosch have a known quantity, for example the bit at the beginning here that states 2ms, then you have a set known quantity, you can then work from that with various offsets and variables based on this known figure and elaborate on the variables to your hearts content and that's all Bosch do, continue to break it down and as such evolve the systems as a further breakdown of known/set figures. It's just maths and logic, that's all an ecu can do, I've highlighted some bits in the download file to give you an idea in red; the "offset", "function off", "gradient" type of bits;

http://nefariousmotorsports.com/forum/index.php?topic=10419.0title=


Title: Re: Ignition cut rev limiter me7
Post by: 4ringpieces on September 05, 2017, 02:04:35 PM
No charge time No spark. Works amazing on old z20lets ::)


Title: Re: Ignition cut rev limiter me7
Post by: HelperD on September 06, 2017, 07:06:51 AM
I have had good luck with just using KFTSRL.  Never had to touch KFSZT but I suppose I will give it a try now after reading up on it.

D


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on September 16, 2017, 04:43:35 AM
This is my 1.8T now, still with original DP and Cat. ;D

https://www.youtube.com/watch?v=cND_j_2ihNQ

Changes:
KFSZT
=> 0'ed the last row (6000 rpm, I think it's enought)
=> Set next-to-last row to 5960

KFTSRL
=> 0'ed the last row (6000 rpm
=> Set next-to-last row to 5960

NMAX + NMAXOG
=> 6200 rpm

FTOMN
=> 0



Title: Re: Ignition cut rev limiter me7
Post by: KasperH on September 16, 2017, 05:11:07 AM
This is my 1.8T now, still with original DP and Cat. ;D

https://www.youtube.com/watch?v=cND_j_2ihNQ

Changes:
KFSZT
=> 0'ed the last row (6000 rpm, I think it's enought)
=> Set next-to-last row to 5960

KFTSRL
=> 0'ed the last row (6000 rpm
=> Set next-to-last row to 5960

NMAX + NMAXOG
=> 6200 rpm

FTOMN
=> 0



Exactly what I did, and it's fun as hell  ;D
But with cat in place it'll take some serious damage.
Decat and you'll be spitting flames all day and won't have to worry
about the cat melting and plugging up the exhaust :)


Title: Re: Ignition cut rev limiter me7
Post by: RBPE on September 18, 2017, 01:25:04 PM
I've been digging out and rebuilding some files lately and uploaded some ignition patent info if it helps on this, various years I think; makes it easier for me to find!  ;)

https://app.box.com/s/7uqaix0y9c9z59g7722dr7z54q8f5k4u

https://app.box.com/s/4wt0gxgvyu3bklxa1g0fxopummwnogc3

https://app.box.com/s/08g950lz8gg9o1w01hlt7rj01wo0zhj9

https://app.box.com/s/kjw5zi30k4bbbm2yawpcdigl9p8rwbtv

https://app.box.com/s/lgvp59z16vrr90l2qbbfodm91mep6h9s

https://app.box.com/s/7j1jcahdo4yvxoz5e5n52begxhejz16z

https://app.box.com/s/hxj7kqpfiwqp7q8n7delntx7nlcxn97n

https://app.box.com/s/xgs2vl4bun9ldvl3gscfsijgig4gpjgk

https://app.box.com/s/lr5yx98l0j8az3xb1d94mgik2t7s2p6t

https://app.box.com/s/mgalngtwdggjwj9ciy08yachlvtz4zvw


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on September 20, 2017, 04:11:22 AM
Small question here.
My Golf 4 accelerates like shit with this changes (small stuttering).

But why?
=> Maybe a ignition coil is half-blown?
=> Maybe it's because FTOMN = 0 ?

When flashing the stock maps the car runs fine.
My spark plugs are brand new.

By the way:
My remap contains some other small changes, but not much (a little bit KFZW(2), KFMIRL, LDRXN, KFLDHBN, KFMIOP, LAMFA). For safety I use 98oz fuel.


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on September 20, 2017, 04:17:21 AM
Small question here.
My Golf 4 accelerates like shit with this changes (small stuttering).

But why?
=> Maybe a ignition coil is half-blown?
=> Maybe it's because FTOMN = 0 ?

When flashing the stock maps the car runs fine.
My spark plugs are brand new.

By the way:
My remap contains some other small changes, but not much (a little bit KFZW(2), KFMIRL, LDRXN, KFLDHBN, KFMIOP, LAMFA). For safety I use 98oz fuel.


On wot acceleration or part throttle?
Could be coils, could also be plugs themselves.

Do you have any logs of it happening?


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on September 20, 2017, 04:21:14 AM
You can feel it the most at part throttle (3rd gear, 3200 rpm).
I can feel it at wot too, but not much. I will make a log this afternoon and attach it.
Error memory is empty.

I think FTOMN = 0 is the fault, what do you think?

Edit: I even found out (thanks to boost gauge), that the boost "bounces" hardly at low rpm (maybe because a faulty combustion?), full throttle works fine.  ???


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on September 20, 2017, 04:56:53 AM
You can feel it the most at part throttle (3rd gear, 3200 rpm).
I can feel it at wot too, but not much. I will make a log this afternoon and attach it.
Error memory is empty.

I think FTOMN = 0 is the fault, what do you think?

Edit: I even found out (thanks to boost gauge), that the boost "bounces" hardly at low rpm (maybe because a faulty combustion?), full throttle works fine.  ???

I don't think that 0 dwell time is the culprit.
Sounds more like misfire.
Anyway it's easier to pinpoint with logs :)


Title: Ignition cut rev limiter me7
Post by: 4ringpieces on September 20, 2017, 05:51:13 AM
Misfires Or piss poor kfmirl and kfmiop tables


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on September 20, 2017, 06:29:58 AM
Or piss poor kfmirl and kfmiop tables

Yeah, forgot to ask what changes you made to IRL and IOP?


Title: Re: Ignition cut rev limiter me7
Post by: Gaghunfv2 on September 20, 2017, 09:09:41 AM
I've found the issue. :D

My LAMFA was too low at full load (0,82). I increased KFZW(2), which leaded to prefire (sorry for my english).
But hey, you learn by your mistakes...  ;D

An Mod can delete my posts so others aren't getting confused.


Title: Re: Ignition cut rev limiter me7
Post by: cpp on October 07, 2017, 08:07:13 AM

in short I have a rev limiter as I wanted!
my error was in the xdf axis, I just modified the rpm values in the xdf parameters.
beginner.
I appreciate your attention!
here is a video
https://www.youtube.com/watch?v=cIZ65StULMc&feature=youtu.be

and my configuration.


Title: Re: Ignition cut rev limiter me7
Post by: Joker68 on May 28, 2018, 10:00:17 AM
Hello all,

Can anyone please help me find FTOMN in this map?

thank you


Title: Re: Ignition cut rev limiter me7
Post by: Joker68 on May 28, 2018, 10:23:04 AM
Hello all,

Can anyone please help me find FTOMN in this map?

thank you


Title: Re: Ignition cut rev limiter me7
Post by: HelperD on May 28, 2018, 10:47:39 AM
1A2DC


Title: Re: Ignition cut rev limiter me7
Post by: Joker68 on May 29, 2018, 12:08:04 PM
1A2DC

thank you its function only when car stay on brake what map i must change for function till ride?


Title: Re: Ignition cut rev limiter me7
Post by: slklite on June 06, 2018, 01:22:18 PM
Hello guys, first of all, thank you for your help !!!

I'd like to know something.

I have an golf MK2 1.8T swapped, no speed sensor (mk2 cluster), no brake or clutch sensor either to the ecu

Do you think this will affect the hard cut rev limiter operation ?

I'm asking because I tried and it kinda worked, but only randomly. I decided to cycle igntion and after that car wouldn't start anymore. Scanned for faults, nothing unusual (evap sai cat o2...), cleared and still no start. After that, I flashed back the ori file and it started right away.

Thank you.


Title: Re: Ignition cut rev limiter me7
Post by: adam- on June 06, 2018, 11:50:29 PM
Checksums?  All those things don't work.

Fit a brake and clutch switch.


Title: Re: Ignition cut rev limiter me7
Post by: gman86 on June 07, 2018, 03:01:09 AM
Do not have the 2nd last RPM column set to 0. It'll cause the ECU to interpolate between the 3rd last and 2nd. That means as you progress thru the RPMs from 3rd to 2nd, it'll start to break up. You want to set the 2nd last column to stock and have the last one only 40rpm apart with 0.


Title: Re: Ignition cut rev limiter me7
Post by: slklite on June 07, 2018, 01:13:52 PM
Hello, thank you for your input guys.

@adam- for this to work, I must have a brake and clutch sensor or not ? I know for a fact that AL & NLS won't work because the ecu doesn't get the speed information.

@gman86 attached to this post is a screenshot of the settings i used.

With these, I had a "normal" (as opposed to the oem soft one) rev limiter but no bangs. After driving the car for a little while it dies, and impossible to start it again until i flash the old ori file or any other one for that matter...


Title: Re: Ignition cut rev limiter me7
Post by: mushtafa on August 07, 2018, 11:15:31 AM
Noob question now.... Doubting myself....

Can I just change the RPM on the axis like this?


Title: Re: Ignition cut rev limiter me7
Post by: adam- on August 07, 2018, 12:57:30 PM
Read two answers above yours.


Title: Re: Ignition cut rev limiter me7
Post by: mushtafa on August 07, 2018, 01:47:10 PM
I feel stupid now  :P, all makes sense!


Title: Re: Ignition cut rev limiter me7
Post by: mj12345 on September 11, 2018, 07:00:22 AM
Hey guys,

i want to test the limiter in this A6 2.7T..
Are these settings okay?

Regards


Title: Re: Ignition cut rev limiter me7
Post by: opctim on September 11, 2018, 07:52:16 AM
I did the same thing with an ME1.5.5, even though it doesn't equip FTOMN. It worked fine. Nice big flames when setting KFZW to -40° at the last rpm axis.


Title: Re: Ignition cut rev limiter me7
Post by: adam- on September 11, 2018, 07:54:09 AM
No, change the axis.


Title: Re: Ignition cut rev limiter me7
Post by: mj12345 on September 11, 2018, 09:20:08 AM
No, change the axis.

Oh okay i see it.. how to change the 5000 rpm to 5960 ?

Thank you


Title: Re: Ignition cut rev limiter me7
Post by: opctim on September 11, 2018, 11:04:24 PM
No, change the axis.

Of course. It doesn't work without changing the last KFZW axis.

@mj12345

In WinOLS, select the axis value you want to change and hit enter. This will change the axis value from the hexdump. This won't work if you defined the axes for yourself  ;) ;D


Title: Re: Ignition cut rev limiter me7
Post by: mj12345 on September 12, 2018, 02:00:13 AM
I have change the axis in tuner pro..

is it so okay?
The limiter is set down to 6000 rpm.

 ;)


Title: Re: Ignition cut rev limiter me7
Post by: KasperH on September 12, 2018, 03:08:02 AM
Should work like that, yes.


Title: Re: Ignition cut rev limiter me7
Post by: bororobbo on October 18, 2018, 05:04:16 AM
Could someone help me find and define KFTSRL so i can add it to my xdf file please. i would like to limiter bash for a bit of fun lol


Title: Re: Ignition cut rev limiter me7
Post by: HelperD on January 19, 2019, 05:35:06 AM
Could someone help me find and define KFTSRL so i can add it to my xdf file please. i would like to limiter bash for a bit of fun lol

Here you go, should be everything you need.


Title: Re: Re: Ignition cut rev limiter me7
Post by: bororobbo on January 19, 2019, 03:10:07 PM
Here you go, should be everything you need.
Thank you

Sent from my GT-I9195 using Tapatalk



Title: Re: Ignition cut rev limiter me7
Post by: tedi509 on March 03, 2019, 02:52:27 AM
Hi i'm looking for kfszt on 1ml906032a v 0001 can anybody help me??