Exhaust question - 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 06-02-2003, 01:34 PM   #1
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Default Exhaust question

I went to the exhaust shop today and the guy said that if I replace the cat with a resonator that the computer will throw a code because of the rear O2 . Wouldn't punching the cat do the same thing? Do tips make a difference in sound or ae they just cosmetic?
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Old 06-02-2003, 04:41 PM   #2
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Knocking out the CAT should throw a code too. I know the big ugly a$$ rice tips provide some sound, LOL, but tips that WE would get may not. Some tips are different though. I know some are resonated too which may sound different than plain rolled tips. But I don't have mine yet so I'm not the best one to tell you.
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