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Thread: Switchable boost on Regal maps

  
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    Switchable boost on Regal maps

    Is it possible to switch boost whilst driving or does the car need to be stationery? If you had 290+bhp on a FWD car, take off would be very skiddish - so was wondering if you were doing a 1/4 mile run. Could you start off on standard boost then switch on the mapped boost once you were in 2nd gear? Maybe get a slightly faster time that way?
    - 2004 Vauxhall Zafira GSi - Silver, work in progress..
    - 2003 BMW 325ti M Sport - Silver, 18" CSL wheels in matt anthracite, Eibachs, Full red leather

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    Yes it can be switched whilst running either way

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    So do you reckon switching the boost up after engaging 2nd gear on a high powered car would make the overall 1/4mile time quicker? Just thinking because all the high powered cars spin so badly off the line, that progress would probably be quicker on a lower boost. The high powered cars really take off from 3rd onwards..

    Opinions??
    - 2004 Vauxhall Zafira GSi - Silver, work in progress..
    - 2003 BMW 325ti M Sport - Silver, 18" CSL wheels in matt anthracite, Eibachs, Full red leather

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    No ........

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    tried that already, it is too slow in 1st, It's better to give it a bit less off the start line
    Be Happy


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    I thought boost was limited in the first two gears anyway?

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    How does/would it know what gear your in?
    The truth is always the truth even if you haven't realised it yet...

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    Quote Originally Posted by ZaffyGsi View Post
    I thought boost was limited in the first two gears anyway?
    It restricts the boost solenoid so all gears are affected

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    Quote Originally Posted by lee gsi View Post
    How does/would it know what gear your in?

    Dunno but regal say on their website that it turns it down a bit in 1st and 2nd.. Look at the phase 1 writeup
    Arden Astra GSI - Phase 3.5

    EDS Phase 3.5 288 BHP 340 FT/LB

    Inlet cam and Dbilas manifold.

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    sure I read somewhere that boost is lowered in the first 2 gears as the ecu monitors the wheel speed sensors and 3rd high boost is from about 60mph+ ish. The Regal low boost is 9psi in all gears, high boost overboost to 28psi then drop back to about 19 in 1st and 2nd then 21 in 3rd+
    Be Happy


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