Thanks. I did some search on P0430 error code. My buddy mentioned something about gutting the pre cat and the main cat also. By gutting the pre cat wouldn't it trip the check engine light again? If I ended up getting a MSDS header w/y-pipe do I still need to worry about the pre cats? He told me to get the header w/y-pipe and gut the stock main cat and install a borla exhaust. Are any of these performance part going to fix my problems? I don't know, I'm not mechanically inclined so please bare with me.