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Thread: Gut cats? Good Idea or bad idea?

  1. #11
    Join Date
    Jun 2008
    Posts
    270
    Quote Originally Posted by boss13 View Post
    I have a question because I was thinking about doing the same thing but they do emissions testing here. So is gutting them bad?
    Are you serious?


    x2 on the smell. My truck has no cats and I really don't care for the odor. This could be because I have a few exhaust leaks but it still will exit out the back eventually.

    MKader17

  2. #12
    Join Date
    Jul 2008
    Location
    Racoon Twp., PA
    Posts
    1,572
    Pretty, much any scrap yard will buy them off you, the guys that pay the most though around here are the people who buy them for cores. Thats why i got more for having the whole y-pipe and not jus the cats.
    2013 CC 5.3
    81 C10 LS1 project

  3. #13
    Join Date
    Mar 2008
    Location
    Pearland,Tx
    Posts
    276
    so having a ory pipe with no cats you will lose low tq but gain top end tq?

    2008 GMC Sierra 5.3
    RCSB

    K&N Intake,Flomaster Dump,3.73,g80

    Comming soon :Cam ,Nelson Tune, LT Headers and the works.

  4. #14

    ?

    Everything I know about cats points to them being power robbing pieces of emission junk. How would removal decrease tq?

  5. #15
    Join Date
    Mar 2008
    Location
    Pearland,Tx
    Posts
    276
    yeah that i always thought i am gona try it my self an ory

    2008 GMC Sierra 5.3
    RCSB

    K&N Intake,Flomaster Dump,3.73,g80

    Comming soon :Cam ,Nelson Tune, LT Headers and the works.

  6. #16
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    Cats built in the last 15 or so years don't take away that much power at all until you hit the mod wall.

    Look at eBay, prices are really high for junk cats 'cause of the nickel and platinum.

    Yes, any vehicle without cats smells bad....unless you run race fuel.

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