Nissan 370Z Forum - View Single Post - Question about the hiss/rattle after installing HFC's

fairladyZ34 · 10-21-2009, 11:04 PM

if you dont put high flow cats or test pipes you wont get that hiss. its the only way to not have it. a resonated test pipe helps but the hiss is still there

10-21-2009, 11:04 PM	#15 (permalink)
fairladyZ34 A True Z Fanatic Join Date: Aug 2009 Location: Central NJ Posts: 1,577 Drives: 08 G37S Black M6 Rep Power: 19	if you dont put high flow cats or test pipes you wont get that hiss. its the only way to not have it. a resonated test pipe helps but the hiss is still there