[JoshApple]

2007 N54 FBO MHD Stage 2+ 93 Oct. 135k miles. Any ideas why my AFR's are as high as 18 before richening out during my logs? No codes at the moment but have had crankshaft position sensor codes recently. I believe I did have a O2 sensor code at one point but I dont recall what it was. Also had a superknock code the other day but it has not returned. Pre-cat O2's are relatively new within the last 10k miles. Spark plugs and coils were replaced roughly 20-30k miles ago. Injectors 30k miles ago.

Take a look and see what you think. During pulls lately, the car feels like it's struggling to go until higher RPMs then it takes off, might be able to see that in the logs. Especially during the time frame that the AFRs are extremely lean, maybe related?

Thoughts?

https://datazap.me/u/japple7/8-21-22?log=0&data=3-19

[CarAbuser]

LTFT are max fuel reduction and STFT are max fuel enrichment. You can try to reset the fuel trim adaptation first then keep an eye on those trim values.

[Bimmer_Bro]

What fuel are you using? You are having several timing corrections on at least 3 cylinders.

It also would not hurt to try a different map. I was having nonsense mixture control codes with V10 when I cruise on the highway. I flashed back to V7 and my car is much happier. V9 is ok too. Iv seen some weird issues with V10 so far .

[JoshApple]

Originally Posted by Bimmer_Bro

What fuel are you using? You are having several timing corrections on at least 3 cylinders.

It also would not hurt to try a different map. I was having nonsense mixture control codes with V10 when I cruise on the highway. I flashed back to V7 and my car is much happier. V9 is ok too. Iv seen some weird issues with V10 so far .

I am on V10, I'll try remapping to a different version and see what happens