Im thinking about getting the cobb access port tuner. I was just wondering though if when i return it to the stock map can the dealership tell I have used this. Im worried that it will void my warranty as I just bought the car and purchased the extended five yr warranty. I did try searching and couldn't find anything on this before I posted this. Thanks

 

when you flash your car back to the stock map, the dealership cannot tell if you did anything. i have a mazdaspeed6 with the cobb tuner on it. when i had to take it in for a bad turbo, i flashed it back to stock and all was good.