diff. btwn resonater and high flow cat.
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diff. btwn resonater and high flow cat.
i was wondering what's the different from a resonater and high flow cat. i live in cali..so emission is important...i was planning to get headers (hp racing or megan racing), exhaust (greddy evo2 or megan racing), but don't know what downpipe/high flow cat i should get...any advice would help thnx.
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