Personaly I hate the hiss.. I'm 99% sure it comes from the xpipe. I've sat under the car while someone revved it and most of the rasp/hiss comes directly from the xpipe you can clearly hear it.. I'd like to switch exhausts and test thigs out but that becomes expensive and I have no guarantees that it will be any different.
Last edited by Daishi; 06-14-2010 at 09:31 AM.
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