LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Cat gone..options

Old 11-18-2010, 08:13 AM
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Default Cat gone..options

Just got confirmation that my driver's side catalytic converter on my 97 is bad. To have a shop do it, cost would be $600. I have stock manifold/exhaust (except muffler) so what are my options, other than going with a straight pipe? Is it worth going with a high flow cat and if so, would I have to replace both sides? Would one of the cheaper universal cats work? Any cheap places for OEM cats? Ebay?

I was also told that I could keep driving it without any issues, Is this true?

Thank ya.
Old 11-18-2010, 08:15 AM
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Do you have any inspections/emissions testing? If not then I would delete both cats. If you just have a visual then throw some fake cats on, or something that looks like a cat.
Old 11-18-2010, 08:28 AM
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Originally Posted by camar0corey
Do you have any inspections/emissions testing? If not then I would delete both cats. If you just have a visual then throw some fake cats on, or something that looks like a cat.
Yeah, or just gut them out for free.
Old 11-18-2010, 11:16 AM
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No, we don't have emissions testing in Michigan, but I still want to keep it legal. Will the universal "bullet" style cats work, or do I have to use the expensive OEM cats?
Old 11-18-2010, 11:46 AM
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Ditching the cats wouldn't be a problem. If you feel you MUST have them, get magnaflow highflows.

Before anybody jumps on me and says that deleting the cat is illegal, I'd like to know if anyone (outside of an inspection state) had gotten a fine for not having one?
Old 11-18-2010, 01:28 PM
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Never, MT, ID and certain counties in WA don't give a rats ***.
Old 11-18-2010, 01:46 PM
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I called Walker and they said any bullet cat would do, a local muffler shop had one in stock - $350 installed, no O2 needed, car fixed, turns out cat was beat up inside and the car actually runs a "little" better now.

Thanks guys!


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