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Originally Posted by spiderman So the Stillen doesn't replace the stock converters? If you want to replace them, you need the HFC's too? What does adding the HFC's with the
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02-28-2009, 10:27 AM
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#11 (permalink) | |
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OG Priesthood
 
Join Date: Feb 2009
Location: Fargo, ND
Posts: 17,859
Drives: NISMO T
Rep Power: 61   |
Quote:
stock catalytic converters are by far the most restrictive part of the exhaust system. stock cats are for vehicle emissions. replacing them with high flowing cats or test pipes free up a lot of power that is otherwise sufficated by the cats. your not really adding horsepower, your actually unleashing the power that is already there by a free-er flowing aftermarket setup. so ultimately by replacing the cats w/ hfcs and a good catback along with a good cold air intake you are making it easier for the engine to breathe...better breathing equals more horsepower to the ground. and as a added bonus a much much better sound out of the exhaust. |
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