BriinumsBo
New member
the adjustment is for vacuum!!!
the BOV opens when a vacuum is reached in intake manifold (when the throttle valve is closed before the intake manifold). when there is a vacuum, the BOV opens, no mater how much boost or no boost is in the intercooler. the adjustment is for how much vacuum needs to be to open the valve. if your car doesnt run on high vacuum, it should be adjusted to softer setting so that it opens at all. but it if the adjustment is too soft, the boost pressure would push against and open the BOV, because of the soft resistance - in result the turbo would leak boost.
the BOV opens when a vacuum is reached in intake manifold (when the throttle valve is closed before the intake manifold). when there is a vacuum, the BOV opens, no mater how much boost or no boost is in the intercooler. the adjustment is for how much vacuum needs to be to open the valve. if your car doesnt run on high vacuum, it should be adjusted to softer setting so that it opens at all. but it if the adjustment is too soft, the boost pressure would push against and open the BOV, because of the soft resistance - in result the turbo would leak boost.