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Thread: Boost gauge readings

  
  1. #1
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    chrismk4gsi's Avatar
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    Boost gauge readings

    Well its all plumbed in an have been for a test drive.

    As this is my first turbo car i am not sure as to what i expect the turbo boost to be but it reads as follows:

    When the engine is at idle is shows about -20 to -25psi

    When i put my foot down it initially goes to around +9/10psi then drops and stays at +6/7psi untill i change gear.

    If im in 5th and floor it it reaches about +11/12psi

    Do these values sound reasonable?? As said earlier, i dont know what i should expect the boost levels to be?
    Former GSi owner, now own a plastic car with a vectra engine......

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    LordNikon's Avatar
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    Use the force of the search function ..........................

    You would have found that those are pretty right, albeit boost sounds alittle low but nothing major !

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    mattycruise's Avatar
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    sound reasonable enough. i have the CS4 high torgue map and mine overboosts off my guage to about 17psi and drops back down to about 13psi
    Is Back To The Dark Side!!!!

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    Used search but there was nothing definitive. Lots of contadictory views.
    Former GSi owner, now own a plastic car with a vectra engine......

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    Hmmmm must be searching something different to me, found about 4 pages of boost readings for various stages of tune.

    Matty- yours sounds low at 13psi for stage 4 !

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    what did you enter into the search box??
    Former GSi owner, now own a plastic car with a vectra engine......

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    Enkidu's Avatar
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    Mines around 14-15 psi overboost settling to 12psi and thats a stage 1
    Arden Astra GSI - Phase 3.5

    EDS Phase 3.5 288 BHP 340 FT/LB

    Inlet cam and Dbilas manifold.

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    LordNikon's Avatar
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    GSI boost
    Phase 1 boost
    Boost gauge
    Boost readings

    All bring back the majority of the same pages.

    Enkidu, that sounds right for a phase I car

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    Quote Originally Posted by LordNikon View Post
    Hmmmm must be searching something different to me, found about 4 pages of boost readings for various stages of tune.

    Matty- yours sounds low at 13psi for stage 4 !
    i just realised i was taking a rubbish guess, think mine is 21psi overboost and back to 17/18. i really should just go out to look at boost gauge and i will know for sure
    Is Back To The Dark Side!!!!

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    Matty that would sounds more like it ! lol

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