Does gutting the precats on an LT4 help
Thread Starter
Racer
Joined: Dec 2000
Posts: 257
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Does gutting the precats on an LT4 help
I heard there's pros and cons to this idea. Will it help me and at what speed. Or will it feel like I lost power. I'm about to install my new flowmaster mufflers and I was thinking about the precats. I have an '96 lt4.
Race Director
Joined: Apr 2000
Posts: 15,344
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From: Texas
Re: Does gutting the precats on an LT4 help (D SHARK 9)
There are no precats on an LT4. Those big barrel cats are the main cats. The thing in the center is a resonator.
You might want to see what the cats cost ($$$) before you gut them. You'll also need to program out the aft o2 sensors (or buy o2 sims) to avoid setting the SES light. If you have emissions testing to pass, it's likely the car will fail.
:cheers:
You might want to see what the cats cost ($$$) before you gut them. You'll also need to program out the aft o2 sensors (or buy o2 sims) to avoid setting the SES light. If you have emissions testing to pass, it's likely the car will fail.
:cheers:
Safety Car
Joined: Feb 2000
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From: Howell N.J. Home of Redgar
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I went to Cruise-In V with Vetteweiser
Re: Does gutting the precats on an LT4 help (96GS#007)
Go with the Random Tech high flow cats I did in my LT4 and I love them , as far as gutting them I think its not worth it . Your emmisions will change and maybe your state my not pass you at inspection time .... :yesnod: either way good luck :thumbs:
Le Mans Master
Joined: Aug 2002
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From: Clearwater FL
St. Jude Donor '06
Re: Does gutting the precats on an LT4 help (D SHARK 9)
Iv'e heard that if you want to eliminate the cats, get a pipe and put it in the cats place so there is no turbulence caused by the can shape of the inside of the cat. One thing is that the car will be LOUD with out cats and flowmasters. I was surprised how much louder a similar car to mine with no cats and corsa exh. :seeya
Safety Car
Joined: Jul 2001
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From: Pinellas Florida Misfit
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Re: Does gutting the precats on an LT4 help (C4DC)
I wouldn't gut the cats... they are extremly expensive. I plan on removing mine for long tubes/no cats, but keeping the original parts just in case.
