07 GT/CS

When loading brenspeeds tunes do I need to return it to stock every time i want or need to change from one tune to another or can I just load the 91 then the 93 back to the 91 and so on. I don't want it to erase the factory tune out of the programmer or anything thanks for the help.

dolint95

no you can go from 87 to 91 to 93, or any combination. Once you tune your car, your stock tune stays with that tuner until you were to wipe it out. If you tried to tune someone elses car with your tuner it would say "wrong vehicle". The only time you have to go to stock tune is if you want your stock tune back on your car. Very good question tho...at least your thinking

07 GT/CS

Sweet, Thanks for the info. That's what I was hoping but wasn't sure.