Well you got B1S1 working. B2S1 is still not functioning. It starts popping because B2 is going way rich as STFT increases on that bank. You'll also...
You'll see more of an improvement from doing the VE. (and if your '06 E40 runs like my '06 E40 with the MAF failed, you will take it off and stuff it...
I mentioned before I have been taking courses for HPTuners. I Tuned my MAF sensor today and followed the course to a T...To be honest I think I fixed...