I have all MS part with a race pipe. It is way to loud for me and I was wondering if I put in a magnaflow high flow cat in vs a resonator if it would affect my warrenty???

no, but replacing a functional cat usually isn't legal.

I have a hi-flow CAT and a catback. My dealer hasn't complained, and they still do all warranty work without giving me trouble. Hope that helps.

only time aftermarket cat is an issue, really, is when the CEL comes on, and the code has something to do with the cat. solution is just to put the factory cat back in :)

http://www.rx8club.com/showthread.php?t=104756

beers :beer: