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Thread: How do i decat my car???

  1. #1
    Regular Member Vectra Adz's Avatar
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    Vehicle : SXi+

    Trim : GSi Spec

    Engine : 1910

    Year : 2004

    Mileage : 140k +

    Default How do i decat my car???

    As above.. I want to take the cat of my car... whats the easiest way to do this?? how would i smash it out as such???

    Also... Mines a 04 hatch... 1.9 cdti 120... do i have a precat??? and a normal cat.. i know i defo dont have DPF...

  2. #2
    Full Member merikiito's Avatar
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    Vehicle : Insignia CDTi SRi NAV 160

    Trim : SRi

    Engine : A20DTH

    Year : 2009

    Mileage : 88000

    Default

    Precat is at the front of the exhaust coming off the manifold/turbo. You can remove it and knock the stuffing out of it making sure you remove the sensor first so it does not get damaged or replace it with a pre cat pipe. You can replace the main cat under the car with a straight through pipe,there are no sensors going into this one
    Lois Griffin: Peter! You're bribing your daughter with a car?
    Peter Griffin: Ah, c'mon, Lois, isn't 'bribe' just another word for 'love'?

  3. #3
    Regular Member Даниил's Avatar
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    Vehicle : Vectra C

    Trim : sri nav/Elite

    Engine : CDTI 150

    Year : 56

    Mileage : 130ish

    Default

    i brought a second hand pre-cat and used a hammer, mini chisel, and drill to smash the insides out. and my mate who is a mechanic fitted it. and then cut the main cat in half and smashed the internals out and welded it back up.

  4. #4
    Regular Member Vectra Adz's Avatar
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    Vehicle : SXi+

    Trim : GSi Spec

    Engine : 1910

    Year : 2004

    Mileage : 140k +

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    cool i hope its as easy as you say lol.

  5. #5
    Regular Member Даниил's Avatar
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    Vehicle : Vectra C

    Trim : sri nav/Elite

    Engine : CDTI 150

    Year : 56

    Mileage : 130ish

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    if you get a custom strait through exhaust you would only need the pre-cat doing.

  6. #6
    Full Member merikiito's Avatar
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    Vehicle : Insignia CDTi SRi NAV 160

    Trim : SRi

    Engine : A20DTH

    Year : 2009

    Mileage : 88000
    Lois Griffin: Peter! You're bribing your daughter with a car?
    Peter Griffin: Ah, c'mon, Lois, isn't 'bribe' just another word for 'love'?

  7. #7
    Regular Member Даниил's Avatar
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    Vehicle : Vectra C

    Trim : sri nav/Elite

    Engine : CDTI 150

    Year : 56

    Mileage : 130ish

    Default

    £120 for that little bit of pipe its ridiculous. thats why i just smashed mine out its a lot cheaper.
    Last edited by Даниил; 27th July 2012 at 20:01.

  8. #8
    Regular Member Vectra Adz's Avatar
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    Vehicle : SXi+

    Trim : GSi Spec

    Engine : 1910

    Year : 2004

    Mileage : 140k +

    Default

    to be fair, that does seem a bit much for a piece of pipework, i might look for a 2nd hand one, and do that...

    this one will do wont it?
    http://www.ebay.co.uk/sch/i.html?_tr...recat&_sacat=0

  9. #9
    Regular Member Big Red's Avatar
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    Mate you can get decat pipes brand new on ebay for 69 quid i believe

  10. #10
    Regular Member Big Red's Avatar
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    Default

    Type in vectra c decat pipe

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