I used to have an issue with boost being built up. Turns out I didn't install the wastegate valve seal. So I put it in and it builds great. Also with my pcv it vents to the atmosphere. Wether or not any oil is spewing out of my dipstick I don't know but tiny bit does come out of the pcv sometimes.
RISE AGAIN EGGYOLK
302 WHP 274 WTQ ZETEC CREW #271