Im not sure if im allowed to bring up such a old thread, but oh well here goes...

I got a stack of info from this thread now, so im pretty excited about that!

I just did a audi 3.2 vr6 turbo conversion, and now im also in the noob pit for tuning...GT-innovations helped me out with some definitions for my file, and lots of extra info but im still struggling. Way too many grey areas! So  i think i need to give him a break with all my questions and see if i can find some extra help here.

My build thread:

https://www.vwclub.co.za/forum/viewtopic.php?f=93&t=202227&sid=f5020b518155e11d19d63893d2207d04

Anyways im not sure what was going on with regards to the fueling of the R32 in this thread, definitely a mechanical issue. Mine seems to fuel okay at WOT. Stock LAMFA requests 13.2, and thats where it goes and stays. That is actually my first issue and question, hoping someone can point me in the right direction here.

Obviously starting with the fueling, i have 550cc injectors running @ 4 bar. So Ive scaled them in via krkte, and did the voltage corrections in TVUB. I also set RLFS map all to 1, as i put a return line on my fuel system. ONLY changing those maps, i wrote the file to the ecu and ran some logs to see what changed. Fueling was a bit spikier but that was it, still hit requested afr's.

Then i went ahead, and only changed my lamfa map, where it was requesting 13.2 afr at full load i changed the values to 11.6 to see if it would actually request those AFR's. Did some logs, it requested 11.6 afr, but the actual afr didnt follow it AT ALL, it dropped the afr's below 10, and was still adding more fuel via STFT's. So now when ever i change my lamfa map, even just by a little bit, my actual afr's get completely lost and the car just dumps fuel.

So from there i decided to see what happens if i try use KFLBTS to fuel under load, just to test what it does. So i set TABGBTS, TKABTS, TIKABTS all to 450 degrees. KFLBTS and KFLBTS2, i set the AFR to 11.6 from 3000 rpm, and load of 90 up. No luck. Still only requesting 13.2 afr ...Im ready to blow my mind, i cant be struggling with the most simple part of the tuning already! lol

I also logged actual EGT, of which it runs up to 800 degrees, and my actual EGT guage shows around 900 degrees.
Load sits at 120.
Max timing pull of 2 degrees in a 5th gear pull.
injector pulse sits at 7ms.
MAF readings around 270 g/s, and getting maf limit error.

I have a 100mm maf which im going to put on, but for now i want to get the basic fueling strategy working!

Any help will really be appreciated!!

Nick

Thanks for splitting it then, And sorry about that!

Its fine, I will do my best to get it as close to right as i can! I don't really have a choice, as there are no tuners here that can tune my ecu anyway! Im obviously willing to pay a proffessional for the parts that are really above me!

So uhm, any advice as to why my car isn't fueling via KFLBTS?

Yeah i set all values in RLFS to 1, thanks!

Not sure which post you are refering to, but it wasnt hard at all to turbo it. For a NA to FI conversion it was quite straight forward. The tuning is obviously proving to be another story.

Did you convert to single lambda and patch the asm code in the file to allow for it?

I guess not?

Theres a small update in my build thread with dyno in the link above if you interested in checking it out.

Its fine, i will get there in time. Anychance you can reply with a bit of help? Specifically, why i cant get my car to fuel via lambts? Ive got my loads a lot more in check, just need to clean up my timing. I just really need help with the fueling. Please.

Any fueling at much over 100% load conditions is going to be problematic, since the ECU fueling path isn't designed for it.