Removing catalytic converter - Chevy and GMC Duramax Diesel Forum
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Old 09-14-2008, 05:01 AM   eBay Motors  #1 (permalink)
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Removing catalytic converter

I was changing my oil yesterday, and finally looked around for the cat. That thing is huge! I know that someone else posted on here that they took theirs off and just used a piece of flex pipe in it's place. Is that cool to do? Is there a better way to do it without spending money on a complete system. Is there a pipe I can buy? Sorry for all the questions, just a little hesitant. Also, what are the chances of voiding the warranty doing this? If I keep that cat and put it back on for warranty work, it will have to be installed with splices and clamps, so they will obviously know that it has been removed. It's probably just up to the dealer right?
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Old 09-14-2008, 05:17 AM   eBay Motors  #2 (permalink)
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it really is up to the stealer on the warranty... I see no problem with removing the cat and putting it back in when you go for warranty work... I have my cat removed and love the sound of it. you can definately hear the whistle in the turbo and you will love it. JUST DO IT MAN!
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06 Silverado 2500 cc/sb Silver 6.6 Duramax LBZ BABY! H2 Wheels // Tow Mirrors // EGR Blocked // Edge Evolution // Diablo sport predator // Cobra 29 CB Radio//PPE Air Box Mod // Straight Piped Missing Kitty... !
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Old 09-14-2008, 05:20 AM   eBay Motors  #3 (permalink)
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Do you have a complete exhaust system or did you just cut it out of the stock system? Was it very difficult? It looks like it should be pretty easy.
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'07 Classic 2500HD ext. cab
nerf bars
delta diamond plate tool box
back rack
Edge Juice w/attitude
K&N CAI
MBRP 4" turbo back w/5" tip
Moto Metal 16 x 9 (hopefully 285's soon!)

04 GMC Yukon Denali
07 Honda Rancher 400 w/ITP Mudlites!
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Old 09-14-2008, 05:21 AM   eBay Motors  #4 (permalink)
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Also, where did you find your H2 wheels? Do they stick out further than the stock rims?
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'07 Classic 2500HD ext. cab
nerf bars
delta diamond plate tool box
back rack
Edge Juice w/attitude
K&N CAI
MBRP 4" turbo back w/5" tip
Moto Metal 16 x 9 (hopefully 285's soon!)

04 GMC Yukon Denali
07 Honda Rancher 400 w/ITP Mudlites!
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Old 09-14-2008, 05:26 AM   eBay Motors  #5 (permalink)
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I still have the stock system... I went to the local parts store and got some 3.5'' pipe and put it in there with band clamps. It was fairly easy. I got my H2 wheels from some lady around anchorage. she was selling them for a friend. $600 wheels and tires and the combo had maybe 100 miles on em. I think they do stick out a lil further then stock. I enjoy the look of em.
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06 Silverado 2500 cc/sb Silver 6.6 Duramax LBZ BABY! H2 Wheels // Tow Mirrors // EGR Blocked // Edge Evolution // Diablo sport predator // Cobra 29 CB Radio//PPE Air Box Mod // Straight Piped Missing Kitty... !
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1998 Dodge 3500 12 valve... ECLB Lariat w/ Fully skirted flatbed.. completely stock work truck... wait I think its missing the cat... wonder where it went to

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Old 09-14-2008, 05:28 AM   eBay Motors  #6 (permalink)
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If you want pictures of my wheels and tires on my truck let me know. I am not exactly sure how to post them up on the forum but I can put them in my garage
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"No good decision was ever made in a swivel chair"

06 Silverado 2500 cc/sb Silver 6.6 Duramax LBZ BABY! H2 Wheels // Tow Mirrors // EGR Blocked // Edge Evolution // Diablo sport predator // Cobra 29 CB Radio//PPE Air Box Mod // Straight Piped Missing Kitty... !
-----------------------------------------------------------------------------------------
1998 Dodge 3500 12 valve... ECLB Lariat w/ Fully skirted flatbed.. completely stock work truck... wait I think its missing the cat... wonder where it went to

Jackrabbit Services
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Old 09-14-2008, 05:29 AM   eBay Motors  #7 (permalink)
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Thanks for the quick replies. Maybe I'll take it off today if I have some extra time. You'd think that being my own boss I could take Sunday off, but nope. Got two jobs to look at and I have to start ripping out my basement today (says the wife). Any way, enough complaining, thanks for the info.
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'07 Classic 2500HD ext. cab
nerf bars
delta diamond plate tool box
back rack
Edge Juice w/attitude
K&N CAI
MBRP 4" turbo back w/5" tip
Moto Metal 16 x 9 (hopefully 285's soon!)

04 GMC Yukon Denali
07 Honda Rancher 400 w/ITP Mudlites!
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Old 09-14-2008, 05:43 AM   eBay Motors  #8 (permalink)
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no problem... good luck hope you get time!
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"No good decision was ever made in a swivel chair"

06 Silverado 2500 cc/sb Silver 6.6 Duramax LBZ BABY! H2 Wheels // Tow Mirrors // EGR Blocked // Edge Evolution // Diablo sport predator // Cobra 29 CB Radio//PPE Air Box Mod // Straight Piped Missing Kitty... !
-----------------------------------------------------------------------------------------
1998 Dodge 3500 12 valve... ECLB Lariat w/ Fully skirted flatbed.. completely stock work truck... wait I think its missing the cat... wonder where it went to

Jackrabbit Services
"We Jump When you Call!"
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Old 09-14-2008, 05:46 AM   eBay Motors  #9 (permalink)
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If you wouldn't mind posting some pics of your wheels that'd be great. I want some different wheels, but I really don't want to spend a whole bunch of money on a work truck that sees a lot of gravel and landfills. Sounds like you got a pretty good deal!
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'07 Classic 2500HD ext. cab
nerf bars
delta diamond plate tool box
back rack
Edge Juice w/attitude
K&N CAI
MBRP 4" turbo back w/5" tip
Moto Metal 16 x 9 (hopefully 285's soon!)

04 GMC Yukon Denali
07 Honda Rancher 400 w/ITP Mudlites!
WorkTruck is offline   Reply With Quote Quick reply to this message
Old 09-14-2008, 05:49 AM   eBay Motors  #10 (permalink)
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ok gimme a min to figure out how to do it
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"No good decision was ever made in a swivel chair"

06 Silverado 2500 cc/sb Silver 6.6 Duramax LBZ BABY! H2 Wheels // Tow Mirrors // EGR Blocked // Edge Evolution // Diablo sport predator // Cobra 29 CB Radio//PPE Air Box Mod // Straight Piped Missing Kitty... !
-----------------------------------------------------------------------------------------
1998 Dodge 3500 12 valve... ECLB Lariat w/ Fully skirted flatbed.. completely stock work truck... wait I think its missing the cat... wonder where it went to

Jackrabbit Services
"We Jump When you Call!"
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