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

m4a1mustang · 08-20-2010, 08:49 AM

It's just inherent to an X-pipe. H-pipes tend to sound "fuller" at lower RPMs vs. an X pipe, which sounds hollow. I used to run a off-road X pipe on my Mustang and there was a hiss-like sound from that at the low RPMs. Screamed like a banshee up top, though.

08-20-2010, 08:49 AM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	It's just inherent to an X-pipe. H-pipes tend to sound "fuller" at lower RPMs vs. an X pipe, which sounds hollow. I used to run a off-road X pipe on my Mustang and there was a hiss-like sound from that at the low RPMs. Screamed like a banshee up top, though. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!