Ok so I've got a silly question. My stang has a CAI with Steeda tune and I'm currently running the 93 tune with 93 octane in the tank.

My question is this, with 93 octane in the tank, is it ok for me to drive the car with the tune set to the 91 octane tune??

Sorry if this is a stupid question!

 

Shouldnt be an issue. Only a problem if you wanted to run the 93 octane tune with 91 octane gas.

 

Yeah, it would only be a problem in the reverse, using a lower octane in a higher octane tune.