I traded my 2012 Mustang GT for a 2015 with the performance package. I still have the iTSX tuner that I used on my 2012 (Bama tunes). I called TSX to see if I could use it to tune the 2015. They told me it would work but I would need to get a company that does custom tunes to write a tune for my car. So I called Bama for a tune and they said they don't think the iTSX is compatible with the 2015 Mustang.

Does anyone have experience with the iTSX and the 2015's or have experience writing tunes that could explain why it would or wouldn't work with the 2015? Thanks!

Dave