Page 1 of 2 12 LastLast
Results 1 to 20 of 31

What should I do solve this problem?

This is a discussion on What should I do solve this problem? within the General Help forums, part of the LSx Technical Help Section category; The cats stopped up (were factory replaced 1yr 1/2 ago) and I don't want to put a strain on the ...

  1. #1
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    What should I do solve this problem?

    The cats stopped up (were factory replaced 1yr 1/2 ago) and I don't want to put a strain on the motor. I don't know crap about exhausts so what's the best fix for $500-$1,000? I live in MS and as far as I know "emissions control" is a non-issue around here. Suggestions?

  2. #2
    Sold: LS1 '85 El Camino ls1camino's Avatar
    Join Date
    Dec 2005
    Location
    Laurel, Maryland
    Posts
    4,977

    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    LT Headers, Off Road Y-Pipe, and Catback

  3. #3
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Are they still under the extended warranty as replacements, or a new warranty? A year and a half is not that long... seems like there should be coverage. Any chance it is something else?

  4. #4
    Member damianj03's Avatar
    Join Date
    May 2009
    Location
    saint robert, mo
    Posts
    265

    slap your mama red
    1998 trans am

    just take the cat off and hollow it out and put it back on = free

  5. #5
    Member c5z28's Avatar
    Join Date
    Apr 2008
    Location
    Bay Area
    Posts
    8,120

    On your ass flashing
    my highbeams

    Quote Originally Posted by pajeff02 View Post
    Are they still under the extended warranty as replacements, or a new warranty? A year and a half is not that long... seems like there should be coverage. Any chance it is something else?
    +1
    Or you can pick up an off road y-pipe for $150 it is a direct bolt-on. Or you can do longtubes and that $500-$1000 budget should get eaten up quick.

  6. #6
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by damianj03 View Post
    just take the cat off and hollow it out and put it back on = free
    One of my dad's friends will cut it off but won't that make it sound bad? I don't mind loud, hell I'd prefer that. If you cut them off or hollow them out, don't you need to put a pipe in there for pressure?
    Last edited by BdAsBrd01; 01-16-2010 at 07:31 PM.

  7. #7
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by pajeff02 View Post
    Are they still under the extended warranty as replacements, or a new warranty? A year and a half is not that long... seems like there should be coverage. Any chance it is something else?
    They were replaced due to the recall so I'm not sure about warranty. I'll call and check on that Monday. The guy that's been working on it says it's the cats, I don't know myself. It started with the check engine light last week so I let him look at it and that's what he came up with.

  8. #8
    Member damianj03's Avatar
    Join Date
    May 2009
    Location
    saint robert, mo
    Posts
    265

    slap your mama red
    1998 trans am

    Quote Originally Posted by BdAsBrd01 View Post
    One of my dad's friends will cut it off but won't that make it sound bad? I don't mind loud, hell I'd prefer that. If you cut them off or hollow them out, don't you need to put a pipe in there for pressure?
    na your headers stock or aftermarket has all of the back pressure you need your muffler that you have wether stock or aftermarket will be the factor of loudness alot of people do cat deletes all the time its just for emissions

  9. #9
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by damianj03 View Post
    na your headers stock or aftermarket has all of the back pressure you need your muffler that you have wether stock or aftermarket will be the factor of loudness alot of people do cat deletes all the time its just for emissions
    Everything on there is stock. I don't think that emissions will be a prob here, just getting someone who will cut 'em off usually is but I think I've got that solved.

  10. #10
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by c5z28 View Post
    +1
    Or you can pick up an off road y-pipe for $150 it is a direct bolt-on. Or you can do longtubes and that $500-$1000 budget should get eaten up quick.
    That's what I was afraid of.

  11. #11
    Member damianj03's Avatar
    Join Date
    May 2009
    Location
    saint robert, mo
    Posts
    265

    slap your mama red
    1998 trans am

    do the cat hollow or offroad pipe which is a cat delete and use the other money for mods
    with 1k you can get about 50-60 hp in mods

  12. #12
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Quote Originally Posted by BdAsBrd01 View Post
    They were replaced due to the recall so I'm not sure about warranty. I'll call and check on that Monday. The guy that's been working on it says it's the cats, I don't know myself. It started with the check engine light last week so I let him look at it and that's what he came up with.

    You need to know the code(s) that resulted in the CEL being lit. Post it up once you find out. Chances are it was catalytic inefficiency, or some crap like that. Could be as simple as a dirty or defective O2 sensor. A plugged cat will definitely affect your performance. Any driveability issues?

  13. #13
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by pajeff02 View Post
    You need to know the code(s) that resulted in the CEL being lit. Post it up once you find out. Chances are it was catalytic inefficiency, or some crap like that. Could be as simple as a dirty or defective O2 sensor. A plugged cat will definitely affect your performance. Any driveability issues?
    Yeah, th gas milage has dropped off dramatically in the past two weeks (maybe a little longer, I've just noticed).

  14. #14
    Member JRENIGAR's Avatar
    Join Date
    Oct 2009
    Location
    arkansas
    Posts
    371

    red
    99 camaro

    cut the cats off and hollow them out. The drivers side only needs to be cut at the cat rear and the other side needs to be cut on both sides. After both sides are cut just slightly pull down and use a big screw driver on the drivers side and beat the center screen out do the same on the pass side and put it all back together. I suggest using a sharpie marker to make a line on the exhaust from front to back and cutting the pipe on the mark so that you can lign up the marks when welding them back together. Use a sawzall and a welder will fill in the gap nicely. I have the stock exhaust setup exactly as I described and it sounds good. Barely louder than stock. At full throttle I can still hear the motor over the exhaust and no rasp at all. Hope this helps.

  15. #15
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by JRENIGAR View Post
    cut the cats off and hollow them out. The drivers side only needs to be cut at the cat rear and the other side needs to be cut on both sides. After both sides are cut just slightly pull down and use a big screw driver on the drivers side and beat the center screen out do the same on the pass side and put it all back together. I suggest using a sharpie marker to make a line on the exhaust from front to back and cutting the pipe on the mark so that you can lign up the marks when welding them back together. Use a sawzall and a welder will fill in the gap nicely. I have the stock exhaust setup exactly as I described and it sounds good. Barely louder than stock. At full throttle I can still hear the motor over the exhaust and no rasp at all. Hope this helps.
    Thanks, I'm gonna get a friend to do the work and this will help him see what I need done. What about cutting them off entirely? Also a friend said that you can buy a "false" cat that's already hollowed out. I wasn't sure. Would an off-road pipe be better than the stock ?

  16. #16
    Member JRENIGAR's Avatar
    Join Date
    Oct 2009
    Location
    arkansas
    Posts
    371

    red
    99 camaro

    well, it might but that requires fabrication and some extra pipe and the drivers side would deffinitely have to be bent to fit back like the factory. I took a 3/8 rod about 2 ft long and a small shop hammer and beat the "stuff" whatever it is out of the center of the cats and just left the hollow cat shell there and welded it back up. Worked great for me. Off road pipe might be better than stock but stock is free if you have a mig welder and a sawzall. It dosent get any better than that. Pm me if you need more help. Good luck.

  17. #17
    Member DaddySS's Avatar
    Join Date
    Oct 2005
    Location
    Bergen Co. NJ
    Posts
    590

    Black
    2000 Camaro SS Conv.

    If they were replaced by the dealer they are under warranty. If you want to get rid of them it's a different story but if you want them fixed - should be free.

  18. #18
    Sarge for AAG Emperor hutch1999's Avatar
    Join Date
    Jul 2006
    Location
    IL
    Posts
    3,779

    06 HD Softail
    1998 Trans Am m6

    whichever exhaust you choose I recommend not hollowing your cat out and putting it back on. My friend did this on his 02 and it sounded like complete crap. Buy long tubes, an offroad Y pipe, and a cat back.

  19. #19
    Resident Mississippian BdAsBrd01's Avatar
    Join Date
    Dec 2007
    Location
    Mississippi
    Posts
    304

    Pewter
    2001 Trans Am

    Quote Originally Posted by hutch1999 View Post
    whichever exhaust you choose I recommend not hollowing your cat out and putting it back on. My friend did this on his 02 and it sounded like complete crap. Buy long tubes, an offroad Y pipe, and a cat back.
    That's what I'm worried about. Could this be done within the 500-1,000 price limit?

  20. #20
    Sarge for AAG Emperor hutch1999's Avatar
    Join Date
    Jul 2006
    Location
    IL
    Posts
    3,779

    06 HD Softail
    1998 Trans Am m6

    Quote Originally Posted by BdAsBrd01 View Post
    That's what I'm worried about. Could this be done within the 500-1,000 price limit?
    Well most likely it can be done if you search. Either some cheaper new stuff, pacesetter lts w/ an ORY and a Hooker cat back will be under $1000 and it is pretty good stuff. Or more expensive used off ebay or off our forum or another.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Optispark Problem Solve And Fix - F$%)#&% Opti!
    By Ed Blown Vert in forum LT1
    Replies: 0
    Last Post: 09-21-2011, 04:20 PM
  2. trying to solve a vibration prob
    By blue00TA in forum Automatic Transmission
    Replies: 7
    Last Post: 12-02-2008, 09:54 AM
  3. Fuel Problem or Severe Engine Problem
    By pet_monk in forum General Help
    Replies: 3
    Last Post: 02-18-2008, 08:51 AM
  4. GM Top Engine Cleaner....solve knocking?
    By cascade in forum General Help
    Replies: 4
    Last Post: 05-09-2006, 07:54 PM
  5. EXPERT tuners help me solve my problem please...
    By Hurley711 in forum Computer & Tuning
    Replies: 7
    Last Post: 02-22-2006, 05:27 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •