I would like to free up my exhaust to help with future mods. I already have a Flowmaster catback. I would like to add some shortie headers and possibly an off road X or H pipe. The question I have is I've heard people talking about getting fines from the pd for not having cats. My stang is emissions exempt in Pennsylvania. I would like to spend less money on the off road instead of spending the extra cash to get a high flow cat X pipe if I can.
1) With the emission exemption, do I need to keep the cats to be legal? Would having classic plates help?
2) At around what modification level will the stock H-pipe become the weakest link and really hurt the potential, even with the catback and headers installed? My plan is to eventually change heads, intake, maybe a cam, fuel pump, injectors.
1) With the emission exemption, do I need to keep the cats to be legal? Would having classic plates help?
2) At around what modification level will the stock H-pipe become the weakest link and really hurt the potential, even with the catback and headers installed? My plan is to eventually change heads, intake, maybe a cam, fuel pump, injectors.