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Thread: signum twin exhaust gains

  1. #1
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    Default signum twin exhaust gains

    Are there any gains by getting a twin back box for a signum diesel?
    Don't want a remap or remove cat/dpf.

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    Is this a purely cosmetic change or will i see any performance gains?

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    Regular Member marktaylor's Avatar
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    id say its purely cosmetic

    they do look better with twin exhausts though

    http://www.vectra-c.com/forum/showth...=146967&page=2
    Last edited by marktaylor; 1st December 2011 at 10:23.

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    The quads look nice, but i prefer the oem look of the twin ovals.

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    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

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    Quote Originally Posted by DHobbs View Post
    The quads look nice, but i prefer the oem look of the twin ovals.
    Jezzy's is a nice twist on the standard ovals

    http://www.vectra-c.com/forum/showpo...1&postcount=13

  6. #6
    Regular Member Signum-Steve's Avatar
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    Vehicle : Jaguar S-Type V6

    Trim : Sport

    Engine : Petrol

    Year : 2003

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    I went with quads, stainless steel with no center box n two back boxes.
    I knocked the guts out of my cat. I left the cat box in place so it looks intact for MOT.
    Along with the air box mod a pipercross air filter with an extra cold air feed into the airbox. My car is now pulling 140 bhp its supposed to be 123 as standard.
    2.2dti siggy

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    Regular Member PANDY 3.2 V6's Avatar
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    Knocked the guts out your cat??? What do you mean? How is it done exactly? Is it same as de catting?

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    Regular Member marktaylor's Avatar
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    Quote Originally Posted by DHobbs View Post
    The quads look nice, but i prefer the oem look of the twin ovals.


    they do look good with oem ovals and a bonus for you if you wanted to change

    http://www.vectra-c.com/forum/showthread.php?t=150382

    got one for sale in for sale section

  9. #9
    Regular Member Signum-Steve's Avatar
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    Vehicle : Jaguar S-Type V6

    Trim : Sport

    Engine : Petrol

    Year : 2003

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    Quote Originally Posted by PANDY 3.2 V6 View Post
    Knocked the guts out your cat??? What do you mean? How is it done exactly? Is it same as de catting?
    Remove the cat part of your zorst and bash the honey combe out with a steel rod and a hammer.
    Take a look look at the link.
    http://www.vectra-c.com/forum/showthread.php?t=133377

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