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Boost Gauge Fitting Help Needed...

Discussion in 'A4/S4 forum(B5 Chassis)' started by tonya4, May 13, 2011.

  1. tonya4
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    tonya4 TDi Powerrrr

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    [May 13, 2011]
    Hi,I decided to fit a boost gauge today,in the right hand centre vent.My question is,where to connect the hose in the engine bay?The car is a 2000 1.9 TDi 115bhp ajm engine.I tried a few places,but on starting the car the gauge was reading a minus figure.Maybe the car needs to be under load?

    thanks in advance
    tony
    #1
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  3. Oranoco
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    Oranoco Well-Known Member

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    [May 13, 2011]
    Not offay with diesel but on petrol you will see a vacume at idle and reving at standstill will only usually get you to atmosphere or a fraction of positive pressure. To get a proper boost reading the engine needs to be under load.
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