Cat removal.
02-10-2011, 08:49 AM
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Cat removal. will cutting my cats off an straight piping it cause me any problems other then throwing a code? Stock tune. And I'm leaving the stock mufflers.
02-10-2011, 01:31 PM
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Other than being illegal probably not. You also will not gain anything either maybe 2hp. Switch out the mids to JBA or just get headers with catless mids if that is what your going for.
02-10-2011, 01:55 PM
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No emissions here 
. Just didn't kno if it will make it run rich an foul out the plugs our anything. Doing it cheap for now an make it a little louder in the process.
. Just didn't kno if it will make it run rich an foul out the plugs our anything. Doing it cheap for now an make it a little louder in the process. 
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02-10-2011, 05:33 PM
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Like the RHG8 said, a muffler delete will change the sound alot more than a cat delete.
02-11-2011, 12:34 AM
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02-11-2011, 01:35 AM
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im running LT's catless mids and i dont have any check engine light. Of course i have a dyno tune which he might have tuned out the 02's but not sure. Mine is cammed, catless, and muffler delete and everyone goes crazy when they hear my car idle. It's fun roaring at mustangs and scaring the **** out of them
02-11-2011, 11:30 AM
#11
By 2004 GM factory cats had improved dramatically from what was installed back in the 80's, for a stock displacement, stock cam, etc the cats aren't much of a limit. Without some tuning after the removal, it will probably make less power.
If you want to go fast for cheap, the answer is in a blue bottle..
If you want to go fast for cheap, the answer is in a blue bottle..
Last edited by twinturbo496; 02-11-2011 at 11:30 AM. Reason: poor grammar
