Nissan 370Z Forum - View Single Post - Hissing noise from 370z aftermarket exhaust system

m4a1mustang · 08-20-2010, 08:43 AM

Certain X-pipe configurations cause the hiss. It will be amplified by the addition of HFCs, TPs, or LTHs.

I know with FI's X-pipe, even with stock cats, there's a good bit of hiss on decel in low RPMs. I don't think the H-pipe systems hiss, and I know that the systems without a crossover pipe have no hiss at all. ZCarMan and Tooohip both run HFCs with the AAM V1 CBE (no crossover) and their cars have zero hiss.

Steve, as long as your Berks use an X-pipe crossover you'll probably pick up an audible hiss once you install your HFCs.

Note: I used "hiss" in every sentence of this post.

08-20-2010, 08:43 AM	#5 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Certain X-pipe configurations cause the hiss. It will be amplified by the addition of HFCs, TPs, or LTHs. I know with FI's X-pipe, even with stock cats, there's a good bit of hiss on decel in low RPMs. I don't think the H-pipe systems hiss, and I know that the systems without a crossover pipe have no hiss at all. ZCarMan and Tooohip both run HFCs with the AAM V1 CBE (no crossover) and their cars have zero hiss. Steve, as long as your Berks use an X-pipe crossover you'll probably pick up an audible hiss once you install your HFCs. Note: I used "hiss" in every sentence of this post. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!