You will get no warranty coverage at all if you are racing it, and even if you aren't racing it, there's next to nothing that you can do that won't also void the warranty. Cat-back and drop-in filter are about all...then MBC and SAFC are only if you're willing to remove them each time and hope that they don't notice how things are no longer in perfect shape in the engine bay.

Highvelocitykid, peruse the link in my sig to learn the best mods to start with, and please learn to specify between HP and WHP. Saying 350HP doens't tell us anything, because only WHP matters, and WHP varies greatly between different dynos while depending on octane, altitude, and weather. Lastly, please follow the rules and search before posting a new thread. This information is readily available.