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Thanks, i reverted the ignition map to stock and that seems to have solved the ignition retard problem, but fuelling problem still exists.

Have also reverted to stock boost (12PSI ish) to try and rule out failing fuel pump/reg but still seeing AFR sitting around 1.

Logged Lambda control and its stuck at 1.

Latest map and log attached.

Log lambda control, you just have actual vs request right now. Knock correction is pulling 11.5* during your full throttle. Not enough data to say for sure but you either have a fuel delivery issue, or fueling is calibrated bad. Can't be sure on that unless you log lambda control. Doesn't look like lambda control is dropping out, more looks like you are not meeting request. The other option is put a fuel pressure gauge on the supply fuel hose and monitor fuel pressure at full throttle. If fuel pressure goes up a little bit, then starts to drop, fuel pump or plugged fuel filter is the issue. If its the original fuel pump, odds are thats the problem, but logging lambda control or fuel pressure gauge to monitor fueling would confirm this.

Double post - added bin

Hi, very new to tuning here, so apologies if there isn't enough detail or if i've missed something.

2004 TT 8N BAM 86k miles, Intake, Intercooler, sports cat, exhaust.  Stock everything else.  98RON, new fuel filter.  Chasing a lean spike and timing pull on WOT.

Log 1 is pre changes

Scaled up KFKHFM to increase fuelling, decreased LDRXN in the midrange to try stop the overboost.

Log 2 after, lean spike flattened but seems to be moved to the rest of the curve and no change in timing pull.  Car feels like it falls on its face around 4k.  Closed loop isn't working as i'm randomly getting O2 heater codes (even thought the O2 sensor is new and seems to be reading ok?).

Any guidance on where i should look next (and why) would be greatly appreciated.  Thanks in advance.

Does anyone have any updog?

Hi everyone, i have an Audi A4 20vt avj engine, gtx 2867 turbo, maffless tune, bosch 630cc injectors, and all necesary peripherals.
The car face an issue, after almost 5000 rpm goes rich to 0,75 lambda. We have check everything. All components and sensors are new.
Returness fuel system replaced with normal fuel rail. I attach log, ori and tune file. Any help apreciated.

Dont know who tune it but its not the best..
I think you have to check your fuel trims..

avj has a different camshaft sensor wheel
4 cuts vs 1 cut at aeb

Apparently injectors too apparently...

Do you have any idea if this difference can be adjusted in the ecu or i need only to replace the sensor.

Any other sensors i need to update (for example the connectors on the knock sensors seem the same but they dont work, also put a new avj lambda and it doesnt work too)?
Also not disabling vvt will be an issue?

Thank you for this hint

Here Orgi with checksum okay

Hi everyone
I'm looking for an original BIN and, if possible, an XDF/Mappack for my ECU.

ECU information:

Audi A4 B6, 2002
1.8T AVJ, 150 HP
Bosch ME7.5
Bosch HW: 0261207778
Bosch SW: 1037363466
SW ID: 363466
VAG HW/SW: 8E0909518M
Revision: 0002
Soft Coding: 0011501
Component: 1.8l R4/5VT 0002

I'm specifically looking for a stock/original BIN matching 8E0909518M 0261207778 363466 0002. I already have one ori bin, but I would like another stock file for comparison and checksum verification. i'm also interested in learning and working on this ECU myself, so i'm looking for the definitions rather than a ready-made tune file. If anyone has a matching file or knows where I can find one, I would really appreciate it.

Thanks

Yes, do download backups occasionally, but it isn't formal or scheduled. I don't have many other options.