Pull types also have problems under high boost. Unless you have a fuel computer, do not vent it to the atmosphere or it will run like crap when you let off the throttle. Venting back into the intake actually helps keep the turbo spooled up since it will blow back into the turbo.
The Bosche style BOV is a cheap effective upgrade for the stock BOV, it's larger, and less likely the stick. I also found somewhere a hybrid BOV that vents some to the atmosphere and some to the intake, best of both worlds...
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