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#1 |
347ci of HORSE POWER!!!
Join Date: Jul 2001
Location: Houston, TX
Posts: 1,416
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![]() I currently have a 1 5/8" unequl headers, 2 1/2" h-pipe with hi-flow cats, and 3 chamber mufflers with 2 1/2" chrome tips all from MAC. The quesiton is how much of a HP gain is the off-road H-pipe then the H-pipe with the Hi-flow cats? How much louder will it make my car? Will I still pass emission tests?
My friend had (before he moved) the same exhaust system as me except for he had the off-road H-pipe. His car sounded quieter for some reason ![]() |
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