I’ve been monitoring my ignition corrections for a while now. I have the cobb stage one tune, roush CAI, and roush catback exhaust (y pipe and axel backs). Today I was driving and saw -7.00 on cylinder three for the first time. I’ve seen it get in the negatives before and I don’t understand it...
I stumbled across this and read the entire post. It is a really good and interesting read on octane on your 'boost.
93 Isn't 93... - 2015+ S550 Mustang Forum (GT, GT350, GT500, Mach 1, Ecoboost) - Mustang6G.com
Not to mention discussion of tunes.