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06-07 LBZ Performance Discussion of Chevy and GMC Trucks with LBZ Duramax Turbo Diesel Engines Related To Performance And Longevity

Whats the best way to gut the cat?

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  #1  
Old 05-16-2009, 05:29 PM
Dmax Rod's Avatar
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Default Whats the best way to gut the cat?
How do I prepare the cat to install 3 1/2 pipe through it?
 
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  #2  
Old 05-16-2009, 10:44 PM
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Don't just cut it off or if you must. Cut it at the welds, gut it, enlarge the holes so you can slide and 3.5" or go up to 4" through it.
 
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Old 06-15-2009, 08:08 PM
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will it hurt the truck if i cut out the cat??
 
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Old 06-16-2009, 10:07 AM
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Originally Posted by Snowman
will it hurt the truck if i cut out the cat??

Nope.. Just check your local emissions laws and vehicel inspection stations.. if you are required to run a cat in your area, then just gut it.. If not, then its fine to replace it with straight pipe.
 
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Old 06-19-2009, 12:39 PM
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Sweet There is no emissions up here. LOL i just dont tell and they dont ask!!
 
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