Originally Posted by mrviper
i have full time wideband in my Zetec turbo and its high compression (9.5:1) and runs .82 lambda at 15psi so its probably going to melt somthing soon
also just a note i have seen cars mapped with the lambda shoved up the exhaust and then done more mapping later but with the lambda screwed in to the down pipe and it reads alot richer than before
Just over 12AFR at 15psi sounds ok to me mate, even on that compression ratio, providing the EGT's are ok i really wouldnt panic on that one!