I live in colorado and I am only able to buy 91 octane fuel, I have noticed a little bit of black smoke when I am pushing the car. I always let the car warm up and I hae a Turbo Timer, is this normal because I know that the car runs rich, or does it have to do with the 91 octane gas? or both?

//Power On

Dan

 

Your first thread has been moved to the Engine/ Turbo/ Drivetrain Forum. Closing this.

https://www.evolutionm.net/forums/sh...threadid=42294