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if i have a type-r with a suppercharger pushing 3 lbs wouldnt getting rid of the cat be a bad thing? i mean the whole back pressure thing....some one plz explain.
Get A high performance cat. It sucks trying to get around inspections and crap like that when you don't have a cat. You need some back pressure but not too much. I would say a hih flow cat and 2 1/2 to 3inch exhaust would be fine .