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Thread: 3.2 V6 GSI Decat.... Is this ok??

  1. #1
    Regular Member VinnyPeewee's Avatar
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    Default 3.2 V6 GSI Decat.... Is this ok??

    thinking of getting a decat pipe made up tomorrow by a friend who owns a Exhaust Shop.

    Will this Be ok for my 3.2 V6..... Will it increase power???

    I already have remus twin Back boxes... just need them to breath a bit easier??!!!

    You opinions will be greatly apriciated!!


    Vinny

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    Regular Member integrale's Avatar
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    Getting rid of the CAt will give you a few more Hp but everytime you go for an MOT you will have to fit the cat back on....

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    Regular Member mark1319's Avatar
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    As above mate and give more sound from the exhaust.

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    Regular Member VinnyPeewee's Avatar
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    well, the cat is off and the courtney sport panel filter is on. Masive difference in throttle response and sounds a lot meatier!!

    Well beleiev it or not it still passes emissons tests (The two Mani-Cats seem to handle the emissions!!

    All good!! just looking into a superchip now to top it all off!!

  5. #5
    Regular Member integrale's Avatar
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    Still watch the MOT as the testers know how many cats you should have.....

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    Regular Member rickyroo's Avatar
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    I'd also watch regarding back pressure loss and tripping your diagnostic sensor, their are ways around this by fitting diodes (shokkty) but be carefull don't attempt unless 100% aware of what doing.

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    Regular Member VinnyPeewee's Avatar
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    well my MOT tester said that it passed emissions ok... he said it didnt matter how many cats are there (or not in my case) as long as it passes the test!!

    Regarding the back pressure loss... ??? This is not as critical for a non-turbo Car. Back pressure from the exhaust system on a turbo controls/ assists in maintaining a constant boost pressure. In a non-turbo car .. its straight out the cylinders and out the back end!!
    Plus there's no diagnostic sensors (that im aware of) to monitor exhaust/ manifold pressure. There's just the Two oxygen/lambda sensores after the Manicats and thats the lot. Its been a couple of weeks now and no trouble what so ever!!

    lol or i may stand corrected ..... I'll ait for the reply's!!

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    Forum Moderator soulman's Avatar
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    Vehicle : Vauxhall

    Trim : Astra Twin Top

    Engine : 1.9cdti

    Year : 07

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    ive no idea ,but i bet it sounds great

  9. #9
    Regular Member integrale's Avatar
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    Always go back to that tester if he's happy with it. I have to change the exhaust every year on the Delta..

  10. #10
    Regular Member rickyroo's Avatar
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    If your CPU is happy mate, enjoy your thursty beast lol.

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