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Old 04-17-2010, 08:07 PM   #1
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Default 2000 chevy straight pipe?

I've been told that if I want to do away with the cats on my 2000 5.3 chevy,,that it will mess with the sensors and it wont run good. Has anyone here done that? I have a gibson exhaust,,just from the cat back...
I'm really just looking for more power, and Oklahoma doesnt do any vehicle inspections anymore!
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Old 04-17-2010, 08:09 PM   #2
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You won't gain any power from removing the cats on an essentially stock setup.
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Old 04-17-2010, 08:43 PM   #3
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why no power gains? It has the Wheatley tuning
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Old 04-17-2010, 09:10 PM   #4
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You will gain 1-3hp by removing the cats on a stock setup. Not worth it and the trouble it will cause because you don't have the tune set to compensate for it and will require a retune.
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Old 04-20-2010, 08:08 AM   #5
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would it be worth getting high flow cats? Mainly looking for better sound.. Have dual flowmasters on it now, 5.3
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Old 04-20-2010, 08:28 AM   #6
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From what I have heard its not worth just removing the cats. If your going to go through all that trouble (including re-tuning your truck to run with out cats) its worth more installing a good set of long tube headers a new y pipe (if your going to still use the single tube exhaust) and then having it tuned. Way more gains.
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Old 04-20-2010, 08:36 AM   #7
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like scoob said, the only reason u should remove the casts is if you are installing long tubes. the only other reason i would cut off cats without any other exhaust mods would be a clogged converter. The gains are just not there.
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Old 06-09-2010, 03:03 PM   #8
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ok, thanks for the input. This summer its getting a cam and headers,, so maybe then different exhaust setup,, We'll see.
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Old 06-09-2010, 03:03 PM
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