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Originally Posted by 08RetroV8  I dont know where you live but most states do not allow any tampering with stock cats (unless they are damages or need replacement) so either way it will not be street legal. |
Yeah, I'm not sure how that works. Muffler shops and other car places won't usually do anything with cats because they're scared of legal implications. Something like, they're only allowed to replace it with the cats/exhaust that it originally shipped with, and those setups run rather expensive, with the cats costing like 250 each. Thanks Ford. You won't see many legal h or x pipes (there are a few) just because of that cats issue, although they'll certainly pass smog no problem. Most smog technicians will just look to see that you have cats and check off the box. If you run an off road setup, you're in violation of this federal law, as you don't have any cats which are required on all cars manufactured after 1974.
As far as exhausts go, it's a personal thing, but I've always liked the Bassani and Magnaflow exhausts, but I know that BBK, Borla, and MAC are just as nice. I'm not much of an SLP fan, because the sound is a little too over the top for me. Had some good experiences with the Pacifica Boom-Tubes, and we're just a short drive down the street from them, can say those sound pretty nice and are so easy to do on the 05+ Mustangs.