Crankcase Breather Valving

[rbabos]

Interesting that the v rod has no one way breathers incorporated into the system. One can easily pick up 3-5 hp by going with one way breathers for better ring control due to less possitive crankcase pressures. Makes me wonder if they found oiling somewhere inside the engine/trans arrangement oiling was better by not going with one way breathers. I'm sure it's part of the design and not an oversite with Porsche? Anyone have an idea?
Ron