i_love_cars said:
seems that way. Just fuckin' weird. After your idea yesterday I second-guessed myself and emailed Terry immediately (as noted) and double-checked my research and while it all lines up, I just don't get it.
To my understanding, even the N54 runs like, well, pretty much every motor you can think of, meaning it likes low 12's for AFR as the happy place.
This is why I don't tune my own N55 and just leave it to someone who knows WTF they're doing
To be fair, I'm running about 13 under full boost to 12.6 by redline.