Has anyone tuned their fiesta st in California with a stratified stage 1 tune and went back to stock tune using their accessport and passed a STAR CERTIFIED SMOG legally? My only mods currently are a Cobb drop in filter, cobb rmm, coilovers and wheels.
I want my car to pass smog legally year after year as long as I can revert back to stock tune and pass smog check and Star certified smog.
I want my car to pass smog legally year after year as long as I can revert back to stock tune and pass smog check and Star certified smog.
