catalytic converter - Truck Forums


Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 04-23-2009, 09:10 PM
Junior Member
Thread Starter
 
Join Date: Apr 2009
Location: Grand Forks, North Dakota
Posts: 19
Default catalytic converter

I need some help!!! My cat is plugged and i dont have the money to get them replaced will it hurt my truck if i hollow them out? Any info on this would be great.
Reply With Quote
  #2  
Old 04-23-2009, 10:06 PM
GMCSierraFan's Avatar
Administrator
 
Join Date: Feb 2009
Location: Midwest
Posts: 1,559
Default

Wont' hurt it, probably have a check engine light though... I run without any CATS and it runs better than with. Although things did change alot in the ten year difference between our rides
Reply With Quote
  #3  
Old 04-23-2009, 11:10 PM
Senior Member
 
Join Date: Mar 2009
Posts: 139
Default

A 2002 will probably have a SES light after it's all said and done. Shouldn't really hurt anything though. All the light is sayin is that your cat conv. isn't doing its job. Of course, it won't be doing its job if it aint there. My 1998 is running w/o cats and it doesn't have a problem. It sounded deeper when I took the cat off. The light wasn't on at all for about two months but then it came on but came off after a day. So the light might not have even been about the cat. Go ahead and do it. The exhaust smells so much better without a cat.
Reply With Quote
  #4  
Old 04-24-2009, 08:44 AM
Junior Member
Thread Starter
 
Join Date: Apr 2009
Location: Grand Forks, North Dakota
Posts: 19
Default

thanks for the input i am going to cut them out this weekend
Reply With Quote
  #5  
Old 04-24-2009, 08:21 PM
chevyrules's Avatar
Senior Member
 
Join Date: Mar 2007
Location: New Hampshire
Posts: 316
Default Removing catalytic converter

Here in nh, if your vehicle fails the emissions test, you can't get an inspection sticker until its fixed. With a check engine light on, thats a big flag right there. Do you guys not have emission testing where your located? We have to get our vehicles registered/inspected every year on our birth month. Won't removing the cc throw a code when they hook up the emissions thing? Or am i missing something here. I have a catback system with flowmaster 50 series, but the cc are still there. Jim
Reply With Quote
  #6  
Old 04-24-2009, 09:32 PM
GMCSierraFan's Avatar
Administrator
 
Join Date: Feb 2009
Location: Midwest
Posts: 1,559
Default

Michigan is so dadgum broke they couldn't afford to run anything like that, Hell half our vehicles would fail because their CATS got knocked off by potholes and the like
Reply With Quote
  #7  
Old 04-24-2009, 10:29 PM
Junior Member
Thread Starter
 
Join Date: Apr 2009
Location: Grand Forks, North Dakota
Posts: 19
Default

Up here in North Dakota we dont have inspections
Reply With Quote
  #8  
Old 04-25-2009, 01:17 PM
Pelicandivebomb's Avatar
Senior Member
 
Join Date: Mar 2009
Location: San Diego, CA
Posts: 145
Default

Take those cats off! I live in california and passed a smog test without any cats on my previous vehicle. So if I can do pass a california test, I think anybody can. But since you don't need a test or anything you should be fine. Don't worry about the check engine light if it comes on because it should go off.
Reply With Quote
  #9  
Old 04-27-2009, 11:19 AM
timber74wolf's Avatar
TruckForum Addict
 
Join Date: Apr 2008
Location: Houston, Texas
Posts: 818
Default

It you are going to the extent of hollowing out your cats... then why not just cut them off and replace them with a stright pipes instead of wasting your time. If you are worried about your check engine light coming on and failing an inspection... then get a tune and delete the cats sensors...
Reply With Quote
  #10  
Old 04-27-2009, 06:39 PM
Member
 
Join Date: Jan 2009
Posts: 54
Default

yeah, if you just simply hollow out your cats you'll end up with a ridiculous "tinny" sounding exhaust note... or even worse, some rattling.
Just remove them and get a custom tune to delete the rear 02 sensors out.

I'm running my 2002 5.3l with thorley long tube headers, and "off-road y-pipe" (or ORY) which basically means no cats (if you ask any reputable exhaust/hot-rod shop to cut out your cats they'll frown at you and refuse, but they can technically make an "off-road only" or "test-pipe" for you!), all hooked up to a DMH e-cutout and a Corsa Sport midpipe and muffler dumped right before the rear axle. Sounds sweet and no SES or codes. Even though I'm in MI, it could easily pass emissions testing, as long as that cut-out stayed closed!
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Jeep Catalytic Converter Eastern Catalytic 70317 SOPHIE18 Automotive Parts for sale 0 12-10-2014 09:44 AM
Catalytic Converter rattle. Chevycowboy Chevy Silverado/ GMC Sierra Forum 12 05-06-2008 08:57 AM
WARNING: Beware of Catalytic Converter theives. bradthurman Chevy Silverado/ GMC Sierra Forum 6 01-01-2008 07:27 PM
WARNING: Beware of Catalytic Converter theives. bradthurman Chevy Silverado/ GMC Sierra Forum 0 12-31-2007 04:00 PM
Dead Catalytic Converter Means Exhaust Upgrade ? Trekerjohn Chevy Silverado/ GMC Sierra Forum 3 10-29-2006 03:22 AM


Tags
02, avalanche, cadillac, catalytic, cats, change, chevy, converter, delete, hollowing, pipe, remove, semi, silverado, truck

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 08:39 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.