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Anyone with HFC or Test Pipe regrets?

I have the stillen HFC on mine with the AAM shortys. I have had them on for prolly 5000 miles or so lot of highway driving and my bumper is

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust
Anyone with HFC or Test Pipe regrets?

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09-16-2016, 04:46 PM	#33 (permalink)
Chasedixon21 Base Member Join Date: May 2016 Location: Fl Posts: 52 Drives: 2014 370z manual Rep Power: 11	I have the stillen HFC on mine with the AAM shortys. I have had them on for prolly 5000 miles or so lot of highway driving and my bumper is fine, and there is no smell compared to test pipes. Sound is ***** nice throaty as ** at 3500-4500. It is quieter in the top end because i still have the restrictive stock y pipe. Im thinking of getting an exaughst shop to custom make me an x-pipe to take the place of the stock y-pipe. Anyone have experience with this?

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