I just got a new 14 ATS 2.0T and couldn’t be any more excited, It is our first Cadillac!!! I am looking to get the trifecta tune. Does anybody have experience with it? And how does it affect the warranty? Will the dealer be able to see it when I take it in for maintenance? And will OnStar diagnostics detect the tune? Or is there any other better tune?
Any information will be greatly appreciated!!