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Thread: Will i need a remap after decat.

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    Regular Member Hyperhart's Avatar
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    Vehicle : Astra GTC VXR

    Trim : VXR

    Engine : 2.0t

    Year : 2013

    Default Will i need a remap after decat.

    I own a 2004 GSi that i have just had the exhaust changed by MIJ, whilst there i got the car decatted as i can run it off the pre cats, now it might just be me but the car does not seem to go like it did before with the standard exhaust. Would a remap help or be in order now the cats been removed. Thanks guys if you can help.

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    Regular Member Chocki's Avatar
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    Let it settle down a bit first as the ECU will have to adapt.
    Try disconnecting the battery overnight. This will in effect reset the ECU.

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    Quote Originally Posted by Hyperhart View Post
    I own a 2004 GSi that i have just had the exhaust changed by MIJ, whilst there i got the car decatted as i can run it off the pre cats, now it might just be me but the car does not seem to go like it did before with the standard exhaust. Would a remap help or be in order now the cats been removed. Thanks guys if you can help.
    I had a decat done at Mij (I have a standard exhaust apart from Remus tailpipes). It certainly hasn't had any detrimental effect on performance but has made a difference to how the auto box responds (much more drivable, and smoother) and the mpg has improved slighly!

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