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Thread: Boost variance

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    Boost variance

    Hi gents,
    From what I have been reading up, I understand that the boost variance for the N55 is between .7-11psi depending on weather, altitude and other factors. This would mean that the boost is set at max 11psi from the factory correct? and that say on a hot day, it would run on higher boost(11psi) to compensate for the power drop from the warm weather, am I correct?
    Also is the boost variance fixed from .7-11psi for all the N55 blocks in the X6, 335, F13 etc etc??


    I have my boost set at +4 in my jb3 stage 1 and I know that max boost it comes stock is at 11psi so am I correct to say that this would mean my variance would be between 11-15psi?
    2012 BMW 640i (AC Schnitzer Package)
    2011 Mercedes E250
    2007 Ford Mondeo

    "Age is but a statistic that has no relevance to enjoyment of horsepower"

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    Need to get @Terry@BMS to answer... he knows this better than anyone else.

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