Can I remove My Cat On my Deville? - Page 2

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View Poll Results: Remove the Catalytic Converter?

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  • Definitly NO

    3 25.00%
  • Yes

    2 16.67%
  • You can, But I don't Suggest it.

    5 41.67%
  • Go For It!

    2 16.67%
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Can I remove My Cat On my Deville? in Past Cadillac Vehicle Discussion; Why not just buy a hi-flow cat from any number of places, stay legal and get the extra 5 HP ...
  1. #16
    codewize's Avatar
    codewize is offline Cadillac Owners Master
    Automobile(s): 91 Brougham d'Elegance / 95 Fleetwood Broug/ 01 DTS / 11 CTS Lux
    Join Date
    Apr 2005
    Upstate NY

    Re: Can I remove My Cat On my Deville?

    Why not just buy a hi-flow cat from any number of places, stay legal and get the extra 5 HP if you really need it.

    91 Brougham d'Elegance 350
    95 Fleetwood Brougham
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  2. #17
    Ville94 is offline Cadillac Owners Member
    Automobile(s): 1994 Cadillac Deville
    Join Date
    May 2009
    Thread Starter

    Re: Can I remove My Cat On my Deville?

    Now, The same question pops up... I have been told so many times and With me knowing how the EGR works... I am worried that If I put a High Flow cat on it as well as a Performance Muffler... Something will happen with my egr and More problems will occur. Whats your opinion?

  3. #18
    jjm01's Avatar
    jjm01 is offline Cadillac Owners Fanatic
    Automobile(s): 2005 Cadillac DeVille DTS
    Join Date
    Nov 2007
    Queens, NY

    Re: Can I remove My Cat On my Deville?

    Of course you can, but don't expect the vehicle to run right unless you plan on doing some major PCM retuning.

    In the 1970s you could get away with bypassing most emissions controls, because they were essentially just tacked on, but now emissions systems are so tightly integrated with engine control systems - and engine design itself - that removing them often causes more problems.

    As much as I hate all this enviornment BS, I would replace the cat - with a genuine GM part.


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  5. #19
    carseller's Avatar
    carseller is offline Cadillac Owners Fanatic
    Automobile(s): 1998 DeVille / 173,000 miles
    Join Date
    Mar 2008
    Roscoe IL

    Re: Can I remove My Cat On my Deville?

    According to "RODYA234", since a volcano can produce emissions if it erupts, then we don't need to worry about things like making our cars run cleaner. I don't know how to stop a volcano from erupting, but I do know how to leave emissions equipment on a car, and other painless ways to help clean up the enviornment.

  6. #20
    Caddyshack100 is offline Cadillac Owners Connoisseur
    Automobile(s): 99STS,2004 Jeep Liberty Renegade,98 Deville RIP
    Join Date
    Nov 2005

    Re: Can I remove My Cat On my Deville?

    These cars were meant to run with a certain amount of backpressure, the muffler as well as the cat work in tandem to acheive this, it is not a good idea for that reason alone to remove the cat. The big carmakers, Domestic and Foreign have had a spotty record when it comes to having emission controls work properly (anybody remember the infamous Chrysler "Lean Burn" system? How many people ripped that out of their cars as soon as possible. As for volcanoes, I did not myself think anything of them until about 10 years ago when it was discovered that Mount Pinatoubo during one eruption emmitted more CFC and CO2 into the atmostsphere than Mankind has done with all the CFC in our cars and cans in our history. Let see if Al Gore can explain that inconvienent truth. Its the same as the Green crowd wants North America to do all it can to negatively change our way of life while China and India happiliy bypass and reap the reward of our stupidity and at our expense.

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