I have talked with the dealership concerning these products,, in length. After purchasing an extended warranty,, I wanted to know what I could do or not. 99% of what I wanted to do was to not. If there is no problems things are rosy, But, and I was the but. I installed a K & N intake and that was all. Then Dodge made me take it off if I wanted them to flip the, over $30, 000 worth of work done under warranty. But if I had gone with what I wanted to do, my name would be shitsky and forking out the $$$. So, I will stick with the program and either wait or purchase another car out of warranty. 1st time in my life I have left a car be with out taking it apart. Dodge rep was great to work with and we both know why the car was having problems. My fault, but he signed off on the work twice. Intake, catch can, and exhaust is about all mods you can do. Oh, pedal performer said walking the line.