From what I have been told in the past the headers will void your warranty but the catback exhaust will not. It comes down to 2 things.......your relationship with the dealership allowing you to modify your vehicle without voiding your warranty or.............it must be proven that the modification caused the damage that would norrmally be covered.Sounds like the mike volume is turned lower on the stock setup.
Any warranty issues?
I watched the video on my TV with bigger speakers. There is a considerable difference. I'm on the fence on whether I will do it or not because I'm not sure if a tune and pulley would also be required in order to maximize the exhaust modification.I think I like it but doesn't seem massively different?