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Thread: Increase in mpg after manifold change!

  1. #1
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    Default Increase in mpg after manifold change!

    After having changed the inlet manifold my mpg has gone down from 49 to 44, wtf, should this not be the other way round? What could have happened? Would it be very noticeable if the belt was a tooth out as i had to remove mine to get the pump out.

  2. #2
    Regular Member Vectra-c-SRI's Avatar
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    Vehicle : Vectra C

    Trim : SRi

    Engine : 1.9cdti 8v (120bhp)

    Year : 2005

    Mileage : 98000

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    vacuum leak on the new gasket maybe not be sealed properly

  3. #3
    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 would say to get more out you need to put more in, its as simple as that.

  4. #4
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    What do you mean steve?

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