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post #1 of 11 (permalink) Old 01-14-2010, 04:34 AM Thread Starter
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Gutted Cat...

yes i know its not green...and please dont tell me its wrong. it will only lead to an argument. and i know i wont pass emissions with it...good thing im moving back to a state that could care less if you run open header(s). i also realize that the minimal gain isnt worth it...that is by no means my intention.
but i just threw a cat code, and cant afford a new dp. and im not going to just replace just the cat. so my question is....
would gutting it change anything in my pcm's mind? anyone know?.... i figure not. but could it help my car until i get a new dp?
btw, the only affecting mods would be k and n intake, and gmpp cat back, both on for well over a year. i had a flowmaster 40 series for about a year. and got one code from it. but the dealer "said" everything was fine....not under warranty anymore either.....

Last edited by scagnetti76; 01-14-2010 at 04:46 AM. Reason: poor grammar
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post #2 of 11 (permalink) Old 01-14-2010, 05:08 AM
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I don't know if gutting would help. Doesn't the cel stay on until it's reset or something?

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post #3 of 11 (permalink) Old 01-14-2010, 05:13 AM Thread Starter
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ya, im pretty sure it would stay on. im just hoping it would help because im already sick of it! lol and i can get a scanner to clear the code.
but im affraid it may cause starting probs down the road if i dont deal with it now....

Last edited by scagnetti76; 01-14-2010 at 05:19 AM.
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post #4 of 11 (permalink) Old 01-14-2010, 06:26 AM
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try having NO cat lol, some states its fine though. I gotta get some money together to get a high-flow before my inspection. If I was to move to SC I could run open header lol pretty much

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post #5 of 11 (permalink) Old 01-14-2010, 06:58 AM
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If my CAT went bad and I could not afford to get a new one I would gut it. Here's the thing, without the cat's guts you might throw a CEL, in fact I am sure that you will, and you may see a minor drop in mpg and power, but if you drive around on a plugged cat you will kill your motor.

I know, some think an engine "needs" back pressure, or it will not run. That is not exactly true. An engine does not "need" back pressure, however they are set up (timing) from the factory to compensate for the back pressure. This is why when you remove the back pressure the car will not feel exactly right.

Still, that's a hell of a lot better than a toasted engine from a plugged cat.

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post #6 of 11 (permalink) Old 01-14-2010, 07:17 AM
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If you gut your cat it will run like a catless dp for the most part. It will run rich and possibly throw a CEL (at least mine did when I went to a catless dp)

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post #7 of 11 (permalink) Old 01-16-2010, 09:47 AM Thread Starter
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thanks for the help guys.
i dont think its clogged. so im going to see if i have any leaks, and look into the o2 sensors first.
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post #8 of 11 (permalink) Old 01-16-2010, 10:01 AM
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Hey bro, If you need one I'll send you my stock one free. Just pay shipping. LMK



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post #9 of 11 (permalink) Old 01-16-2010, 10:31 AM
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post #10 of 11 (permalink) Old 01-16-2010, 11:27 AM
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i thought u were gona show pics of an actual cat being gutted....like as if u were guna eat it or something lol cuz u said "its not green....and plz dont tell me its wrong" or something like that

yah im immature
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