Recently my car had a ignition coil die on me, far away from home and given the circumstances I had no other options but to drive home 100+ km on 4 cylinders. Replaced coils at home and faced an issue where my lambda (measured vs requested) was overly rich on cruise and low load areas. I thought it had something to do with the drive on 4 cyl so I disconnected the battery for 10 minutes and after that lambda returned to normal, as it was before the coil issue. In m232 wiki it says that long term lambda trim is disabled in prjmod. Am I right thinking that it still learns something to the ECU?
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Check XDF if there is long term trim patch in there and if it is applied to bin or not.
It's one specific trim and it's possible to just ignore it completely quite easily. -
Related to patches and lambda control, this is what's visible in XDF downloaded from m2.3.2 wiki.
tunerpro.JPGComment
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Then you gonna have to dig and find where to turn that off...
I have disabled this many times before but maybe it's not in the XDF.Comment
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Dmitri could you clear something up for me:
In the wiki it says the long term fuel trim is disabled " Long term trim is disabled in prjmod."
Then in this post you mentioned to set the max and min to zero - https://www.s2forum.com/forum/techni...42#post2017742
Yet in the base files included (stock and large turbo) for Lambda Max/min LTFT both have +99.22 (max) and -100 (min)
Did you forget to set these to zero in the base files or am I looking at the wrong settings?
Lam trim.jpeg
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This is diag limit. To turn the trim off an asm patch is needed. I am not going to look it up sorry.
Search the fuel path, this gets multiplied in. It's also in a measuring block, so it is quite easy to backtrack what the variable is.Comment
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