NefMoto

Hey,

Boost is dropping alot in high rpm and n75 maxed in logs.

If you go WOT on 4k rpm it sometimes hold a bit better on high rpm

Im thinking its k03 actuator, but no 100% sure.
What you guys think?

Replaced: N75, Go fast diverter valve, intercooler.

LOGS:
2700-6500rpm
https://datazap.me/u/strmix/20tfsi-intercooler-ori-tune?log=0&data=0-9-10-11&solo=4-9&mark=6

I would say that is safe to assume, throttle stays open the whole time and then duty cycle is constant and request does not drop.

What did you expect from this K03? I think you will not get much more air mass. I checked some old logs and had similar results. You can install other downpipe or remove pre-cat and weld 200-cell instead of standard cat, but maybe wastegate has already some cracks and does not seal perfect anymore, spring is weak, etc. Also your lambda regulation is way off, either you fit some shit intake or injectors are already maxed out.

If you want more power install K04 from CDL, BHZ, etc. and injectors from such engine. These engines also had other fuel pressure and map sensor. You can also install B7 RS4 136 bar fuel pressure security valve instead of 130 bar BWA etc. All these parts are plug&play.

Thanks for response.

Its axx engine, has intake, downpipe, intercooler.
And yea i can see mixture is off, but i was thinking its because of low boost.

Now it has 0.72bar @ 6200rpm. I guess it should hold 1 bar. And airmass only 180's. = 230hp.

Can i log with vcds to see if injectors maxed?

Please show intake picture and measured block 32. I think its bad.

Its this intake.

https://en.bsr.se/product/optiflow-filter-system-4900320

Looks like this is no calibrated maf housing. Check 32.1 and 32.2. Maybe your maf reading is way off. Do not delete error before you check it. Its long time adaption, drive at least 30km. Anyway these intakes are most likely bad, better use tts parts.

Thanks for info!

So as it seems its adding fuel, so i should increase KFKHFM?

I have to check block 32.

Injection time 11ms, lamda regulation maxed out but the problem is the boost...
Say thx to the tiny k03 and fix your fueling first. Check fuel pressure

Also it's the k03 limits

Rail pressure hold good and low pressure is at 5 bar.
What else to log in fuel?

Yeah trims are maxed, but i thought its because intake/maf not calibrated to tune.

Fuel log
https://datazap.me/u/strmix/20tfsi-v5-testii?log=0&data=0-1-5-6-8-10-11&solo=1&zoom=33-54&mark=40

Check measured block 32. Install stock intake and check again. Its difficult to calibrate maf in a simple pipe, it will never be perfect. Maybe rebuild this pipe with tts maf. Anyway intake is useless for K03, it was not your problem, but now its your problem...

There is measurement block 31 and 32.

Tried to increase KFKHFM 5% 4000-6500. (Its at ~1.05)
Still stft maxed in log.
Maf showed 10 more then before.

Any recommend what should be adjusted for better trims?
Should i try to decrease value?

Dont want to swap intake.

https://imageupload.io/Jjd0DpcZofPicMv

+5 KFKHFM
https://datazap.me/u/strmix/20tfsi-maf-0?log=0&data=0-1-8-11&solo=1&zoom=0-12&mark=9

You've been given solutions and answers on a silver platter and yet you're insisting that you don't want to swap the intake? GTFO then and do more FAFO until you put a rod through your block or melt a piston.