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Old 12-10-2012, 11:05 AM   #1249 (permalink)
ZMan8
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Quote:
Originally Posted by henryy370z View Post
any way to stop the hissing noise? it bothers me
It hisses even with stock exhaust It's just not that audible. The less restriction the more pronounced the hiss. I can hear it hiss with stock cats and my fi cbe. Its not loud but it's there. Hfc or tp you will hear hiss from far away. No way around it.

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