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Thread: overboost on regal phase 3.5

  
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    turbodara's Avatar
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    overboost on regal phase 3.5

    well changed my plugs and fixed my oil leak and went out in the car and its over boosting to 24 psi in third from low down in the rev range but holding at 18psi is that ok ?
    Back to the drawing board for the 2nd ACT

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    jamesmurray's Avatar
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    that sounds good to me mate

    jimbo
    ASTRA MK4 GSI TURBO
    WAS CS3 268bhp & 282lb/ft
    NOW CS4 279bhp & 336lb/ft

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    888rich's Avatar
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    mine seems to be 22/23 and hold at 19/20 so sounds ok to me

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    smitht's Avatar
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    Yep over boosts to nearly 25 then drops back to 18.
    (Previously owned a SRi-Turbo Phase III.5 running 290bhp 370ibft
    AUDI Sales Executive

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