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Thread: Removing Catalyitic Converters

  1. #1
    karolko is offline Cadillac Owners Member
    Automobile(s): XLR
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    Removing Catalyitic Converters

    I was wondering if there would be a problem with removing the catalytic converters fromt he car, Mainly computer/ECM type issues. Do our XLR's come with O2 sensors before and after the Cat's? If not, then i cannot see taking out the cat's as a potential problem.

    I live in Alberta and we have no emmisions laws, and sometimes mine start smelling like rotten eggs, so if i can rip them out, i would happily put in a custom exhaust.

    Adrian Karolko


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  3. #2
    alarmu12 is offline Cadillac Owners Member
    Automobile(s): 2007 XLR & 1993 FLEETWOOD BROUGHAM
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    Re: Removing Catalyitic Converters

    The xlr does have o2 sensors front and back of the converter. There are some nice exhaust systems available for the xlr for plus or minus $1500.

  4. #3
    deadringer's Avatar
    deadringer is offline Cadillac Owners Fanatic
    Automobile(s): Modified 06 XLR-V
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    Houston, TX
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    Re: Removing Catalyitic Converters

    Quote Originally Posted by karolko View Post
    I was wondering if there would be a problem with removing the catalytic converters fromt he car, Mainly computer/ECM type issues. Do our XLR's come with O2 sensors before and after the Cat's? If not, then i cannot see taking out the cat's as a potential problem.

    I live in Alberta and we have no emmisions laws, and sometimes mine start smelling like rotten eggs, so if i can rip them out, i would happily put in a custom exhaust.

    Adrian Karolko
    The exhaust manifold and cats are one assembly - so you'd have to remove them to cut them and then try to build something to replace the cats... since they are cast iron I think that would take some work.

    Perhaps you can get D3 to make you some headers that do not have cats...

    As for the ECM - you can remove the rear O2 sensors and disable to the trouble code for them when you get a re-tune for it.

    What you're trying to do is not going to be cheap... but good luck.

  5. #4
    karolko is offline Cadillac Owners Member
    Automobile(s): XLR
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    Re: Removing Catalyitic Converters

    Man i hate this car. Everything that should be done performance wise is like pulling teeth. I guess i am going to leave this thing along, let me my mom drive the thing, keep my hair, and buy a ZR1.

    Thanks for the info guys,

    Adrian

  6. #5
    deadringer's Avatar
    deadringer is offline Cadillac Owners Fanatic
    Automobile(s): Modified 06 XLR-V
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    Re: Removing Catalyitic Converters

    I don't understand why you're frustrated... everything on my XLR-V was bolt-on and I did it in my own garage...

  7. #6
    GizmoQ's Avatar
    GizmoQ is offline The Last Good Gremlin
    Automobile(s): 06 XLR-V and 96 Eldorado ESC-V -- One day ;)
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    Re: Removing Catalyitic Converters

    Quote Originally Posted by deadringer View Post
    I don't understand why you're frustrated... everything on my XLR-V was bolt-on and I did it in my own garage...
    And a knowledgeable tuner can disable the rear O2 sensors, remove the speed limiter, change the shift points, etc., in no time - thanks Jesse.

    Why don't you just find a reputable muffler shop, have them drop the front of the cat-back and ream out the insides of the cats with them still on the vehicle.
    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 510RWHP and 546TQ so far...final goal 575/550

    ELWOOD - "Corvette in a Tuxedo ... with a Jet Pack"



    2013 St Louis Region SCCA Solo SSM Class Champion
    Texas Mile Record Holder: Street Legal XLR @ 165.6MPH
    ECTA LSR Record Holder: 4.2-5.0L Blown Gas Modified Sports Car

  8. #7
    jimmbo is offline Cadillac Owners Fanatic
    Automobile(s): 2008 sts, 1995 Brougham V4P
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    Re: Removing Catalyitic Converters

    Quote Originally Posted by karolko View Post
    I was wondering if there would be a problem with removing the catalytic converters fromt he car, Mainly computer/ECM type issues. Do our XLR's come with O2 sensors before and after the Cat's? If not, then i cannot see taking out the cat's as a potential problem.

    I live in Alberta and we have no emmisions laws, and sometimes mine start smelling like rotten eggs, so if i can rip them out, i would happily put in a custom exhaust.

    Adrian Karolko
    Provincially we don't have auto emission standards, however there are federal regulaions. I would certainly like to know which 'reputable muffler shops would deliberately disable/destroy these systems"

  9. #8
    z06bigbird is offline Cadillac Owners Connoisseur
    Automobile(s): Sedan de Ville, CTS
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    San Antonio, Tx
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    Re: Removing Catalyitic Converters

    Not sure of the name of these muffler shops, but return address for some of their personnel is something like Leavinworth, Kansas. 66048. Certainly, Quebec zip will be different.


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