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gutted cats?
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From: Kinston, NC
gutted cats? I have a 2000 camaro ss, and i was wondering what would happen if i gutted out my cats. would my check engine light flash on? do i need a programmer to make this cahnge? if anyone has any answers let me know 
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I haven't tried it on a Camaro, but after I gutted the cat on my Jeep it did throw a code, but after a couple days it went away, and it hasn't trown a code in weeks. (keep in mind this was a Jeep, not a Camaro.)
Hopefuly someone will be along with a better answer for you.
I haven't tried it on a Camaro, but after I gutted the cat on my Jeep it did throw a code, but after a couple days it went away, and it hasn't trown a code in weeks. (keep in mind this was a Jeep, not a Camaro.)
Hopefuly someone will be along with a better answer for you.
Thread Starter
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From: Kinston, NC
thanks alot, yea i got some buddys that tried it on their gt's (99-04 models) some of them had lights to come on, some didn't. Just don't want to ruin a good set of cats and have to buy some new ones.
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Your vehicle has 4 o2 sensors. 2 pre-cats, and 2 post cats. For now, focus on the post cats. The sensors are there to give the pcm a reading on how well the cats are functioning. The purpose of the cat is to reduce HC emissions. Gutting the cats, will prevent the extra HC's from burning. Thus the post cat o2's will detect that extra HC, and throw a code for a malfunctioning cat.
This can be fix three ways:
1. Purchase o2 simulators for around $50-100 and lie to your computer about the performance (Very wise to lie to a device that controls almost every on your car).
2. Delete the post-cat codes all together. Spend some money to take off something that the manufactor put there for a reason.
3. Purchase High-flow cats, burn off that extra HC, don't worry about any codes being thrown or having to tune the computer, and of course you will stay emissions friendly.
On a final note, a cat does not reduce your performance. You will not be able to notice a change other than the tone of your exhaust.
This can be fix three ways:
1. Purchase o2 simulators for around $50-100 and lie to your computer about the performance (Very wise to lie to a device that controls almost every on your car).
2. Delete the post-cat codes all together. Spend some money to take off something that the manufactor put there for a reason.
3. Purchase High-flow cats, burn off that extra HC, don't worry about any codes being thrown or having to tune the computer, and of course you will stay emissions friendly.
On a final note, a cat does not reduce your performance. You will not be able to notice a change other than the tone of your exhaust.
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From: Schiller Park, ILL Member: #317
Originally Posted by Starz T/A 17
Yeah any programmer would be able to delete the codes for good
Last edited by RPM WS6; Jan 31, 2006 at 12:37 PM.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Originally Posted by BlutVonSchwachen
On a final note, a cat does not reduce your performance. You will not be able to notice a change other than the tone of your exhaust.
Thread Starter
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From: Kinston, NC
well the only thing i want to do is be able to notice a difference in sound, i have full slp exaust(from cats back, including the larger y pipe), i think i will just wait until i get a programmer before i screw anything up haha
Originally Posted by BlutVonSchwachen
1. Purchase o2 simulators for around $50-100 and lie to your computer about the performance (Very wise to lie to a device that controls almost every on your car).
2. Delete the post-cat codes all together. Spend some money to take off something that the manufactor put there for a reason.
On a final note, a cat does not reduce your performance. You will not be able to notice a change other than the tone of your exhaust.
2. Delete the post-cat codes all together. Spend some money to take off something that the manufactor put there for a reason.
On a final note, a cat does not reduce your performance. You will not be able to notice a change other than the tone of your exhaust.
The mfg. only put them there only for the PCM to see that the cats are working. Nothing more.
A cat will reduce performance. Just ask any of the guys with 400+hp. A 10-15hp loss is pretty significant.
Originally Posted by LS69TA
You are not lying about performance..just telling the computer that the cats are still doing their job.
The mfg. only put them there only for the PCM to see that the cats are working. Nothing more.
A cat will reduce performance. Just ask any of the guys with 400+hp. A 10-15hp loss is pretty significant.
The mfg. only put them there only for the PCM to see that the cats are working. Nothing more.
A cat will reduce performance. Just ask any of the guys with 400+hp. A 10-15hp loss is pretty significant.
