Quote Originally Posted by woody80z28 View Post
Hmmmmmm... I just tested out the BIN, and with the PE EQ ratio set for 1.18, the wideband was reading just over 16:1! That's supposed to be about 12.5:1. Stock was 1.240, so there's no way it could be backwards right? Cause 1.18 lambda is about 16:1...

But the good news is, it does appear to be entering PE. Wideband was about 14.7ish at moderate throttle, then moved to 16:1 at WOT.
Sounds like low fuel pressure, unmetered air leak or a dirty MAF to me or some poor WOT tuning masked by closed loop at WOT.