Originally Posted by Laguna Seca Blue
I'm very happy that you're making 400+ whp with just your JB4. I'm not exactly sure how you're doing it without advancing timing, but whatever. Personally, I could care less if I was making a few horsepower more or less, I'd even be happy with Cobb's lower numbers, but ONLY if there was some kind of built in failsafe. Running an aggressive E85 tune without one is an accident waiting to happen.
Also made an easy ~400whp with only JB4 Tune (G4)/DPs/Intake and was only mixing 25% E85 on an AT....