Hey everyone, so i have an 06 gt and it is a cert preowned car from the dealership. I got a bama-sct combo tuner awhile back and when i first originally tuned the car i discovered it already had a tune on it. It was a modest tune from what looked to be a ford pro-cal tool. So with that info i was wondering if it already had a tune from the dealership and i erase it and put a better one on will it void the warranty? Then again pretty much anything will, especially in california.