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Thread: how much boost

  1. #1
    Regular Member andy_richmond's Avatar
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    Vehicle InfoStats


    Trim : sri

    Engine : 2.2 dti


    Default how much boost

    ok, been playing with my torque pro app, and was wondering..
    what psi should i be seeing from the turbo in psi on say idle and crusing at 60mph about 2000 revs. ive got an auto so the revs dont get very high but was just wonderig what sort of figures i should be looking at. on idle mine sits at about -0.7 to -0.1 psi
    its a 2.2 dti btw

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    Vehicle : Vectra

    Trim : Design

    Engine : 1.9CDTi

    Year : 2005

    Mileage : Lots

    Default

    I'd be very surprised if it was getting the correct readings with it being a DTi. They're known to be very hard to talk to. Idle, nothing really. With it being a diesel with a vacuum pump it can't actually have a negative boost pressure because it doesn't have a throttle body. It's essentially always wide open. Engine speed is controlled by the fuel being injected. Full boost (from memory so don't quote me on this) would be about 14psi. Cruising the engine is again hardly working so about 5 or 6 psi, maybe a little more or less depending on the road.

  3. #3
    Regular Member andy_richmond's Avatar
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    Trim : sri

    Engine : 2.2 dti


    Default

    Which is near enough what im getting. Thanks for that

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