GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

How difficult to remove the cats?

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Old Apr 14, 2005 | 07:40 PM
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You'll get a SES light.
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Old Apr 14, 2005 | 09:41 PM
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how hard is it to gut them with the ypipe off? What do you use, and how bad will the turbulence hurt my performance untill I can get a whole new exhaust set up? And will there be any performance gain at all with them just gutted?
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Old Apr 14, 2005 | 10:40 PM
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Originally Posted by wannagofast
how hard is it to gut them with the ypipe off? What do you use, and how bad will the turbulence hurt my performance untill I can get a whole new exhaust set up? And will there be any performance gain at all with them just gutted?
Flyer has his gutted but he has a blower as do I. You may gain if you have a high HP app. I would say at least 300rwhp before I even considered it. Id rather gut them as Im hoping the casings will act as a bit of resonator to keep things a little quiter.
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Old Apr 14, 2005 | 11:02 PM
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cool, What do you use to gut them?
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Old Apr 14, 2005 | 11:23 PM
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Originally Posted by wannagofast
cool, What do you use to gut them?
Im the one asking the questions here!! Ive read of people using pipes, drill bits, plumbers snake, etc. Im may go for it tomorrow if I have time
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Old Apr 14, 2005 | 11:48 PM
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Originally Posted by greentahoe
Im the one asking the questions here!! Ive read of people using pipes, drill bits, plumbers snake, etc. Im may go for it tomorrow if I have time
The y-pipe is easy to remove. There are 3 bolts on each header or exhaust manifold and 2 bolts where the y-pipe connects to the exhaust pipe. I used a pipe and hammer. If you have someone to hold the y-pipe a long drill bit would work. Once you have knocked out all the guts you just dump them out. If you have a compressor you can blow out the small debris.
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Old Apr 15, 2005 | 06:56 AM
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Originally Posted by greentahoe
Im the one asking the questions here!! Ive read of people using pipes, drill bits, plumbers snake, etc. Im may go for it tomorrow if I have time
Sorry didnt mean to steal the thread. I was just wondering myself.
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Old Apr 15, 2005 | 09:10 AM
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Originally Posted by wannagofast
Sorry didnt mean to steal the thread. I was just wondering myself.
No prob man.... just messin with ya
Originally Posted by quicksilverado
The y-pipe is easy to remove. There are 3 bolts on each header or exhaust manifold and 2 bolts where the y-pipe connects to the exhaust pipe. I used a pipe and hammer. If you have someone to hold the y-pipe a long drill bit would work. Once you have knocked out all the guts you just dump them out. If you have a compressor you can blow out the small debris
Thats exactly what I was looking for Im kind of lazy sometimes. Thanks
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Old Apr 15, 2005 | 01:25 PM
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Originally Posted by greentahoe
No prob man.... just messin with ya

Thats exactly what I was looking for Im kind of lazy sometimes. Thanks
I here ya. I'm the same way. Its always nice to know exactly whats involved in a project before you decide to take it on.
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Old Apr 15, 2005 | 01:35 PM
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Make sure to wet down the cat is your going to punch it out. Wear a good filtration mask as well.
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