restrictive cat?? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-22-2010, 11:46 AM   #11
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Originally Posted by Danthurs View Post
Our cars have a very open exhaust to start with. Best to keep the cat in place. Just upgrade to a larger free flow cat. I went 3" and it was about $70
Where'd you get it? Is it a weld in? I need a new catalytic converter mine is broken up inside.
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Old 04-22-2010, 01:43 PM   #12
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Gutted my cat last year myself. With a missing muffler and a hollow cat, my neighbors didn't appreciate me starting the car everymorning at 430AM.
My sister is afraid to start my car in the morning to move it. ...hehehe
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Old 04-22-2010, 02:25 PM   #13
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Not worth it. Don't you need a small amount of backpressure anyway?
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