If you are curious, you can always read the Magnuson-Moss Warranty Act. My understanding is that for a dealership to void a normal warranty repair, they must prove (to what exact degree I do not know) that whatever broke, failed directly because of something you did to the car. For example, if you have a tuned car and a window regulator breaks, the regulator would still be covered under warranty - no relationship to the tune. But an engine or transmission failure with a tune? That’s a different story. The likelihood is extremely low that a properly installed CAI will cause any problems, but you never know. May ask what attracts you to the CAI? If it is a power gain, a drop-in K&N filter (or similar mesh filter) will yield the exact same 5-7 hp gain as a CAI. It just won’t change the intake sound any, if that is important to you.