Stillen Gen3 Intake, Berk Hi-flow cat, and Stillen cat-back exhaust

t-ray · 05-11-2009, 12:33 PM

Danny, I just watched the video. Earlier in the thread I posted than on my car(an 05 g35), I have been through 8 exhaust configurations, and I've always had a hiss when decelerating in the lower rpms.

I see that your car exhibits the same behavior. In my case, after 3 years, the cause of the hiss is still unidentified. I hope for your sake that you are correct and the join/gasket is causing the leak/hiss. Good luck.

wstar · 05-11-2009, 02:31 PM

The hiss is apparently normal and nothing to worry about. It doesn't sound bad, there's no reason to complain about it really. The only concern was whether it was a leak, but even non-leaking exhausts have that sound.

As for rasp: compared to the stock exhaust, or say a mild exhaust on a big V8, there is some raspiness to the note. Mine was really bad at first, but that was due to a leak. With the leak fixed, I find the sound to be awesome. There's a little rasp in there, but it's just another subtle component of the sound, it's not a big fart can sound or anything.

05-11-2009, 02:31 PM	#2 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	The hiss is apparently normal and nothing to worry about. It doesn't sound bad, there's no reason to complain about it really. The only concern was whether it was a leak, but even non-leaking exhausts have that sound. As for rasp: compared to the stock exhaust, or say a mild exhaust on a big V8, there is some raspiness to the note. Mine was really bad at first, but that was due to a leak. With the leak fixed, I find the sound to be awesome. There's a little rasp in there, but it's just another subtle component of the sound, it's not a big fart can sound or anything. __________________ 7AT Track Car! Journal thread / Car setup details

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05-11-2009, 12:33 PM	#1 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 18	Danny, I just watched the video. Earlier in the thread I posted than on my car(an 05 g35), I have been through 8 exhaust configurations, and I've always had a hiss when decelerating in the lower rpms. I see that your car exhibits the same behavior. In my case, after 3 years, the cause of the hiss is still unidentified. I hope for your sake that you are correct and the join/gasket is causing the leak/hiss. Good luck.