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gutted cats with stock catback?

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Old May 31, 2005 | 01:45 PM
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Default gutted cats with stock catback?

if i gutted my cats with the stock catback would it sound any louder at all? thanks
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Old May 31, 2005 | 01:45 PM
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oh my car is a 02 ws6..sorry i just got it and i havent updated the sig...
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Old May 31, 2005 | 01:56 PM
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I would say yes, it would definitely be louder. I have never heard a setup like that, so I don't know how much louder. Probably have a bit more rasp to it.
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Old May 31, 2005 | 02:29 PM
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how do you gut the cats? just take the y-pipe off? and then jab a metal rod through them and knock everything out?
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Old May 31, 2005 | 03:00 PM
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Originally Posted by Okie02
how do you gut the cats? just take the y-pipe off? and then jab a metal rod through them and knock everything out?
Yes, that's all you need to do. Be prepared to deal with the SES light you'll soon be looking at. Either O2 simulators or tuning will take care it it.

BTW, why are you wanting to gut the cats? I can tell you from experience that they're not the restriction in the exhaust...the manifolds are. If you want a louder exhaust, a cutout is a more effective way to increase power while gaining sound quality. Gutted cats don't have a good sound quality in my experience.
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Old May 31, 2005 | 03:17 PM
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Yea go with the cut out it sounds really bad ***. U dont need to take the y-pipe out to gut the cats, the cats unbolt on the 00+ cars so u just unbolt them and take them out.
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Old May 31, 2005 | 04:24 PM
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I agree with Patrick and GT. I have basically what you are asking about. I have LT header that run back to the stock muffler with the QTEC closed. It really is not much louder at all idling, so don't get your hopes up. I had it next to my buddys 01 SS stocker, and only a good ear could tell any difference. Accelerating it is noticeably louder, but not extreme. I would say its like a mild catback. Surpisingly, I have no rasp (that I can hear). It has the factory rumble, just amplified a bit. Hope that helps.
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Old May 31, 2005 | 05:41 PM
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yeah some time within the next two weeks im gonna get a ory pipe and headers...my corsa catback is on the way..so i figured what the hell i can mess with it a little until i get my catback and other stuff
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