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Thread: Vectra GSI de-cat!!!!!!

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    Default Vectra GSI de-cat!!!!!!

    Has anyone done the de-cat on their V6?
    Is there a way to clear the cat's on the downpipes without taking them off.
    Have you replaced original downpipes with a bigger bore pipe...if so how much are these.
    Thanks in advance guys.

  2. #2
    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

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    Quote Originally Posted by Daz Newell View Post
    Has anyone done the de-cat on their V6?
    Is there a way to clear the cat's on the downpipes without taking them off.
    Have you replaced original downpipes with a bigger bore pipe...if so how much are these.
    Thanks in advance guys.
    http://www.vectra-c.com/forum/showth...ighlight=decat

    Also do a search on here - several threads on de-catting the 3.2V6.

    HTH

  3. #3
    Regular Member lilangel's Avatar
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    altough sports cat and stainless system will make it much torqier and road legal as well

  4. #4
    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 110000

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    You can take out the main cat and keep it legal, and it still passed MOT regs with no problems as the 2 pre cats do all the work. There is no MOT requirement to have Cats, only that it passes emissions.

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