Originally Posted by robc1976
I had misfires quite a bit asociated with maxed out trims, fuel pressure diving exspeacialy when I went to RB's. Installed new O2's and codes went away. After that I installed the cobb AP with BMS backend flash wich really smoothed out things. But the culprit for my fuel mixture codes where the O2's (primary).
I see. Hopefully the o2s aren't too painful to replace.