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Thread: 2.8 / vxr decat

  1. #1
    Regular Member Ziggy's Avatar
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    Vehicle : Saab

    Trim : 9-3 Vert

    Engine : 2.0

    Year : 2000

    Default 2.8 / vxr decat

    Sorry if this has been covered, but I have looked. I know the 2.8 has 2 cats. Am I correct in thinking I can remove one and still get through MOT's? If so which one and is there any benefit?

    Thank you in advance

  2. #2
    Forum Moderator soulman's Avatar
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    Vehicle : Vauxhall

    Trim : Astra Twin Top

    Engine : 1.9cdti

    Year : 07

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    when I had a Flowtech exhaust fitted .they took that middle box out ..and all ok

  3. #3
    spoons
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    Main Cat & Pre cat in place = MOT Pass

    Main Cat removed & Pre cat in place = MOT Emissions Pass but visual inspection Fail (the main cat must be in situ)

    Main Cat in place & Precat removed = MOT Pass

    Main Cat removed & Precat removed = MOT Fail on all levels

  4. #4
    Regular Member Ziggy's Avatar
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    Vehicle : Saab

    Trim : 9-3 Vert

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    Year : 2000

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    Is precat removal worth it?

  5. #5
    spoons
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    Quote Originally Posted by s_zigmond View Post
    Is precat removal worth it?
    Worth what?

    The money?
    - thats up to you

    The sound?
    - yes it makes the exhaust burble, pop and crackle more

    The power flow?
    - only if you have a remap with higher boost

  6. #6
    Regular Member Ziggy's Avatar
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    Year : 2000

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    Cheers Steve something for me to think about.

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