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**TJ213** · 01-16-2007, 05:22 PM

HFP might give a slight gain and has sound slightly louder than Si exhausts that is still pretty refined I think

It won't give you a big gain, maybe 1-2 HP, but even the best exhaust will probally give you maybe 8hp.

01-16-2007, 05:22 PM	#16 (permalink)
TJ213 I've earned a Custom Title Join Date: Oct 2006 Location: Carlisle, Pennsylvania United States Posts: 1,635	HFP might give a slight gain and has sound slightly louder than Si exhausts that is still pretty refined I think It won't give you a big gain, maybe 1-2 HP, but even the best exhaust will probally give you maybe 8hp. __________________ Comma Club Member #1