Let the olie return hose sit free in the air. I think there is 2 breathers, both at the cover, one to the manifold and one to the orig. blowoff.... The best position for the blow off is 9" to 15" from the intelmanifold... Your blow off is sitting there to take the "back blow" when you go to idle, then it dosn't hit the turbine... Hope that helps a bit...