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Turbosmart bov sping choice

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    Turbosmart bov sping choice

    I've just fitted a big bubba plumb back blow off valve and have a decrease in max boost pressure. Previously setup at 22psi controlled by the motec. Now seems to max out at around 15psi. Bov housing has been wound down as tight as possible so I suspect the off-the-shelf spring is setup for 1 atm.
    Turbosmart sell a range of springs, but there doesn't seem to be any literature on how to choose the right spring (or what spring comes as standard). They seem to be rated as direct spring pressure where the heaviest is ~10psi.
    Any idea on how I can choose the right spring or even if I'm barking up the right tree?
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