NefMoto

hi

i have a problem - after accelerating at WOT (or close to wot) engine cant propery handle idle speed.
for example - pulling hard to 4k and depress gas pedal, shifting to N (manual gerabox) or hold clutch and then rpms goes down but   dont hold at idle and drops to 600 or more and sometimes the engine may stall
and i see at this moment 0.75 lambda (spec and actual) and accordingly long injection time - i think this is the reason but i dont know why ECU want so rich at idle

all ok with unplugged maf or on low loads

1.8t AUM (AUQ, AWP etc)
TT maf housing with stock unit (pretty new) scaled with mazer.gti mafadjust tool

I think it got so rich it stalled..

Is it safe to assume you are running larger injectors?

KFVAKL

KFAKAV

may need some looking into? I'm guessing here.

There isn't much to that log.

Why the larger MAF housing?

yes im using larger (TT 225) injectors with 4 bar FPR. changed krkte, tvub and kflf.
larger maf housing because hybrid turbo makes 200+ g/s
i can only use vag-com to log .. others are not worked (communication errors) dont know why. waiting for MPPS cable i think it helps
didnt changed KFVAKL and KFAKAV. gonna define them and looking tonight thanks

Set the CONNECTION in the ME7Logger .ecu file to 0x00.

Vagcom logs are not sufficient. If you have to, run a dedicated K-line, or pull the cluster for logging.

What does this do exactly?

It does WERK.

not for me

SLOW-0xFE

and connection speed 125000

are solved problem with me7logger :)

here is the logs
problem on second 50 and 84

(http://i33.fastpic.ru/big/2014/0325/3f/5b2f21d5a43f48610b7457a08786d93f.png) (http://fastpic.ru/)

but what exactly does changing this do? I get the SLOW and FAST is slow and fast init but the numbers... I get it's hex but that's it.

have no idea
experimented with 0x00 and saw in me7logger console something about 0xFE .. tried this and it starts logging but crashing after few seconds. speed 125000 and all ok

oh im so stupid.. me7info can show connection settings :)

anyway fueling problem is still there..

Whats your EVAP system looking like?

its stock
nothing has removed

Since and only since you switched MAF and injectors from a TT225 to the AWP/AUQ, copy all the fueling maps over and stock MAF maps and correction maps over. Don't forget the wall film maps also. Because these are your new *stock* settings. So start from there. Put MLHFM to stock for the 225TT also.

See if the rich condition happens again. or put your hardware back to stock with stock ECU settings and see if the rich condition goes away.

okay, waiting for good weather..

what you mean by "wall film maps" .. my english is not very well sorry

ive tried stock 225TT MLHFM right after swapping housing but it reads much lower at all range

Are the intake manifold the same from TT225 and AWP/AUQ?

the runners are the same but the throttle body is on the opposite side

the boost plumbing is somewhat different also.

Forgot to mention the MAF has to be from an '03-05 225TT because the older years didn't use a wideband MAF sensor.

edit: .but you are just using the the TT housing with stock sensor so make sure the TT 225 file you use to copy from is for '03 and up BEA or (I think) BAM engine codes. 2nd engine code is euro. anyway they use the same sensor part number but different housing part number than the AWP/AUQ or H.. the 180 hp rated 1.8t '02 and up model years.

all stuff from BAM engine

Should be good then.

I know this is an old thread, but in case someone has the same issue and searches, I've had this issue and I solved it by increasing KFNWEGM - Fuel cut in map depending on rpm by approx. 300 rpm across the whole range.