Weird rattle, any ideas? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-14-2003, 02:50 PM   #11
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Fellers, Baron lives in Ontario and yes you need a cat converter legally. Its very noticable when you don't have one installed. Not sure of the fines or if they are as high as $10G, but the cops wil stop you.
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Old 08-14-2003, 03:11 PM   #12
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Quote:
Originally Posted by 89BonnieSE89
Fellers, Baron lives in Ontario and yes you need a cat converter legally. Its very noticable when you don't have one installed. Not sure of the fines or if they are as high as $10G, but the cops wil stop you.
They don't even need to hear the exhaust (which isn't much louder after a cat is removed as long as the muffler(*) remain); they'll know by the smell that you're spewing un-"converted" exhaust. It smells like a bad lawnmower...
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Old 08-14-2003, 07:24 PM   #13
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Quote:
Originally Posted by 95naSTA
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Loose pieces inside the catalytic converter.
This is NOT good. trust me. mine clogged, forced exaust pack up into the engine and did some internal damage on a 1000 mile old engine. throw a high flow on there.
I do want to fix it soon. I might just go to an exact replacement, I'm not sure of the advantages of any of these high flow units, and if they will last as long as the original (11 years).

Plus I keep hearing that changing your exhaust can take away low end torque, so not so sure I want to mess with that. Anyone else have first-hand experience in this"?
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Old 08-15-2003, 07:48 AM   #14
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i replaced mine w/ a high flow cat and i definatly didn't loose any torque. you should be fine because your sc'd and will have more back pressure to begin with. the high flow cats are usually cheaper than stock replacements too.
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