Quote:
Originally Posted by Chuck33079
It's not the cat that gives it that hiss. It's kinda just how the motor sounds. It's almost unavoidable with HFCs or test pipes. Resonated pipes help, but it'll still be there.
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Also I don't know if it sound stupid or not... When I sit in the car and stand outside the car(let other people rev it for me) the exhaust note are very different!
When I am in the car, I don't really hear the hiss sound so I don't bother.
