sorry.. forgot it was a M3.8

Nice work done there Jim. If you find the relation between load and boost including transition points you can do it really fast. Other tip is to use KFLF map as a requested AFR/Lambda map then adjust basic fuel map to reach requested values. It will become a more intelligent mapping for the future adjustment. Indeed I assume that was Bosch idea behind adjust this old Motronic load based systems.

Ahaa! Not sure what you mean there.. KFLF is the basic fuel map in my world? You mean that i shall try to find the relation in a spcecific area and then convert it to AFR/Lambda?  Lets say I have Lambda 1.00 in an certain area on my innovate. But in the map i have entered the value 0.879 for example.. Then i convert that to be my KFLF lambda 1.00? im not sure that would work with my injectors they are very unlinear in low rpm area so to speak.. But i might have misundertood this.

//J

Giving life to this thread again.. Its been a looooong horrible winter in many ways here in Sweden. But now im back on track again.

What u say above sounds like a good idea. To calculate what factor is for a given AFR would be nice.. Right now i have simply just been adjusting adjusting again again.. Also good to mention about this is that KFLF cant be adjusted above 1.99. We ran into som problem here an need to rescale the injector constant to a driffrent offset... Thats what i could come up with.. not sure if thats the correct way to go or if i shoul adjust MAF kurve or something else..  But in my mind i make the injector constat abit higher to give more grundmenge and then rescale the whole KFLF map..

Next thing im been thinking about is to make a simple rpm cut with "ing-Dwell" set to "0" over 7500rpm.. The last two rungs will be between 7450 and 7500 taking interporlation in consideration. Would that work u think?


And Next next thing is to make it gargle and pop... I have this on my me7.5 and it bangs like hell no lol.. But where to enable overrun in M3.8.3? And where to edit minimum ign and so on.. Maybe its easier than i think.. Maybe its just to set ign to -48 in some areas and Raise fuel in KFLF in some areas? Any ideas?

I found SW_WE and some maps are similar to me7 but i dont think my OLS file is very weel defined.. I think i am missing some maps.. Going on hunt for att better ols file..

Have you tried lowering the values in TLST.0 TLST.1 (startgrundmenge), this fixed mу hot start issues that I had with my 627cc/min bosch injectors.

As to tuning the AFR, I have approached it like you, set the injector constant, adjusted TVUB and then started to tweek KFLF (using wideband), it's a slow process but I've managed to get the car running good (daily driver). Currently I'm running ~14.7 at idle light load, ~12.5-12.0 at low boost and ~10.6-10.7 at WOT (1.5 bar boost still very rich). Having spent a lot of time tuning the AFR I've come to the conclusion that the best way to tune it is to disable O2 correction, dial in the injectors to run lambda 1 with 1.00 values in KFLF (idle, low load), than enable O2 correction and the look at KFLF as % increase in fuel like eliotroyano stated. Ofcourse it's not that easy as you have wall wetting and so on. I haven't tested if the method I outlined will work since my car is my daily driver and I haven't had free time to test.

P.S. Any one know what the map KFLFLAV - Lambdakennfeld Vorsteuerun zur Einstellung von Lambda=1 Betrieb (Lambda control field Pilot control for setting lambda = 1 operation)  does ?

About the maps TLST.0 TLST.1  Should they be lowered if im having problems cranking.. Im feeling a bit lost now... Coldstart is awsome but hotstart is a nightmare..  One more problem is that after reving up the engine the idle runs very rich until its stables..

I´ve had good results with KFNSAM- Kennfeld Nachstartanhebung.

If you want to make a tune easier you can replace your load(ms)-values with mbar-valus. Is very  rough, but helps a lot
With original MAF, this will be about 10*Eprom (instead of 0,05).