THIS is why i wanted you to post it here. 140g/s for a 180hp tune is low. A healthy 150hp must flow about 130g/s at redline, a healthy 180hp should flow 150g/s at redline. You might have a vacuum or boost leak, maybe a defective component somwhere... this is why you are having underboost issues and not reaching requested loads.

My car has reached 130g/s with 150hp tune, 152g/s with 180hp tune, and now I am flowing 164g/s at 5700rpm and 169g/s at 6300rpm. Which I believe to be the absolute reliable limit to stock k03 turbo.

To estimate power it is said through the internet to use maf reading/0.8 but I consider this calculation too optimistic as 130g/s would translate to 162hp. I use mafreading*1,2 which translates 130g/s to 156hp (more accurate on my perspective). Same for 180hp, do the maths. 169g/s*1,2 is 203hp, which I belive to be accurate when running against similar power/weight cars.

Smoke test your car and make a thorough check. Untill you don't get those values with stock tunes, do not tune any further.

Best regards.

A question about overrun fuelling (I am actually trying to do the opposite to most people - maximize engine braking capability), why do I see around 0.6ms load during overrun? Even several seconds after releasing the throttle, in a wide range of engine speed. Is this some kind of a bug or does it always fuel on overrun?

Also, I noticed the idle regulation starts at quite high rpm, like 1500 (other cars 1000-1200). I only see a relevant value called NDLSO (obere Drehzahlschwelle für digitale Leerlaufstabilisierung - Upper speed threshold for digital idle stabilization) which reads 1200 and does not seem to reflect reality. What are the relevant maps for overrun fuelling and idle regulation?

Thanks

Thx for the info... I think I understand the load during overrun (but shouldnt the throttle plate be shut tight?), but I also see an injection period of about 1.2ms (which anyway mostly seems to be about double the load), during the whole overrun. It is never zero. I guess this is just some calculated value while real is 0? This is vag-com group 2, "inj. period".

However, back on topic, does anyone understand why "load" is in miliseconds? I would understand if it was related to actual injection time, like a theoretical value or something, but the actual injection period mostly seems to be about double that value. What was the idea behind this? And how to log injection time above 16.32ms?  

One more thing, the ignition table goes only up to 10ms "load", but the ecu allows up to 12.7ms without scaling anything. How is ignition timing calculated beyond 10ms? Does it take the last line or extrapolate?