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Mountain Main · 05-20-2003, 05:34 PM

I've heard that if you have mufflers that is enough back pressure for a stock 302 efi engine. That is why a lot of people put MAC Off Road X Pipe. Of course if your car is OBD 2 you need some kind of Cats or the engine light will come on.

05-20-2003, 05:34 PM	#2
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	Mufflers I've heard that if you have mufflers that is enough back pressure for a stock 302 efi engine. That is why a lot of people put MAC Off Road X Pipe. Of course if your car is OBD 2 you need some kind of Cats or the engine light will come on.