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ZCRUZIN · 03-04-2014, 10:10 PM

NEED HELP: I recently added Fast Intentions exhaust with 12" resonators to my 370Z along with installing the Stillen Gen 3 and everything sounded fine. It was certainly a deeper sound in the cab and all of that, but it sounded good to me without any rattles etc.

Today, I had my test pipes installed, and now there is a hissing/rattle sound that's primarily on the down rev side. Sometimes on a hard up rev I can hear it but it is consistent on the down rev side. It's like the sound is from inside the exhaust, not like something rattling on the outside such as an exhaust hanger and such. It almost sounds to me like there's a piece of metal or something inside the exhaust that's causing the hiss/rattle. Any ideas what it may be?

Thanks for your help in advance!

03-04-2014, 10:10 PM	#1 (permalink)
ZCRUZIN Base Member Join Date: Dec 2013 Location: Hattiesburg, MS Posts: 25 Drives: 09 Nissan 370Z BK M6 Rep Power: 11	I need some help... NEED HELP: I recently added Fast Intentions exhaust with 12" resonators to my 370Z along with installing the Stillen Gen 3 and everything sounded fine. It was certainly a deeper sound in the cab and all of that, but it sounded good to me without any rattles etc. Today, I had my test pipes installed, and now there is a hissing/rattle sound that's primarily on the down rev side. Sometimes on a hard up rev I can hear it but it is consistent on the down rev side. It's like the sound is from inside the exhaust, not like something rattling on the outside such as an exhaust hanger and such. It almost sounds to me like there's a piece of metal or something inside the exhaust that's causing the hiss/rattle. Any ideas what it may be? Thanks for your help in advance! __________________ 2009 370Z w/ Sport Package * Red GTR Start Button * GTR Clear Dome Light Lenses * Stillen Gen 3 CAI * Fast Intentions Exhaust w/ 12" Resonators * Z1 SS Test Pipes * Kinetix Camber Kit Front & Rear * SPC Toe Bolts * Z1 Silicone Hoses *