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Corsa owners please chime in

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Old Jun 20, 2011 | 11:01 PM
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Default Corsa owners please chime in

Hi, i just put Kooks headers and no cat y-pipe and a corsa cat-back on my 99T/A. And i have to be honest I don't like it.It sounds awesome idling and with light throttle but once you get into it ,it starts to rasp pretty bad.Anyone else have this issue or know how i can minimize the raspping?

Last edited by Gutz; Jun 21, 2011 at 12:01 AM.
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Old Jun 21, 2011 | 12:01 AM
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put a single hi flow cat on it after the y pipe thats what I did.....
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Old Jun 21, 2011 | 12:12 AM
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You need cats and a better y pipe merge, no other way around it if you want that catback
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Old Jun 21, 2011 | 01:38 AM
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I put a dynomax bullet in the I-pipe (18" i think) and it took alot of the rasp away...i'm happy with it. Miss the sound at idle cuz it toned it down a bit but it sill screams a WOT
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Old Jun 21, 2011 | 07:11 AM
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give it to me and you can have my hooker catback.
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Old Jun 21, 2011 | 07:15 AM
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On my 99 FRC and my 03 Z06 I had the Corsa Pacecar exhaust. I had high flow cats on both too, sounded like a dream. You need a cat or resonator.
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Old Jun 21, 2011 | 07:17 AM
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6speedt/a did that work?
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Old Jun 24, 2011 | 11:24 PM
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Yes it did that was the main reason I did it and too keep the state troopers off my back...
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Old Jun 24, 2011 | 11:46 PM
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Originally Posted by Gutz
Hi, i just put Kooks headers and no cat y-pipe and a corsa cat-back on my 99T/A. And i have to be honest I don't like it.It sounds awesome idling and with light throttle but once you get into it ,it starts to rasp pretty bad.Anyone else have this issue or know how i can minimize the raspping?
Had the SAME problem with my T/A, after driving it for a while i got sick of the sound, i installed cats and WOW what a difference - better sound. I would suggest it!

EDIT: after installing KOOKS cats i lost around 2rwhp and saw no difference with the torque. Think about it this way, it will clean up the sound and when you go out with the gf/wife you wont smell like fumes.
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Old Jun 25, 2011 | 09:15 AM
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I have longtubes, no cats, and the corsa exhaust. I've had only compliments about the sound of my car. Most of the compliments entail "awesome", "amazing", and "bad ***". A few of these came from Mustang owners.

Don't forget, your car sounds different outside than it does inside. I was shocked on how deep it sounded outside the vehicle when revved or driven at WOT.
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Old Jun 25, 2011 | 12:30 PM
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Replace the kooks dump merge with a true merge and this will help the rasp.
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Old Jun 25, 2011 | 01:13 PM
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Originally Posted by madball
Replace the kooks dump merge with a true merge and this will help the rasp.
Yeah, the Kooks Y-pipe merger leaves a lot to be desired, it's more of a collider than a merger. Upgrade to "true merger" and you'll lose a lot of rasp and pick up a little bit of hp/tq.
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Old Jun 26, 2011 | 08:13 PM
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I am running the corsa behind a set of lg long tubes and 2 cats..and an x pipe of course..sounds **** man..
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