I’ll preface this by making it clear that I have no experience with turbo’s or superchargers. I do, however, have experience with PCV valves, and it would seem to me that the two things wouldn’t play well together. I would think it’s likely that with positive pressure applied to the valve, the PCV system would quickly become nothing more than an accesss tube from the plenum to the crankcase, effectively applying your boost to the crankcase. I’d eliminate that pronto.