by LUCKY DAVE on Wed Oct 16, 2013 7:04 am
For what car/engine/setup? What ECU and software?
Any truly proper mapping takes a piggyback or standalone, an eddy current dyno, and lots of time ($$).
Forced induction engines are very intolerant of the slightest lean condition under boost (the melt NOW), so you want to see 11.5-12.0 AFR under load, but that number is also boost level dependent. Running 4 psi? 12.5 will do. 24 psi? 10.8 burning race gas with a huge intercooler and water/meth injection is more like it. Or run E85, but that's whole different set of questions.
So, what is the setup?
David Malmberg
2015-2016 AX CDI team
PCA National DE Instructor
member, Texas Mile 200 MPH club
"A finish is a win! Moderation is the key! More whine!"