2008 2.4l LE5 crate engine - Naturally aspirated. 34" 4 into 1 headers - no cat.
Positive crankcase ventilation will be done by venturi suction into exhaust downstream of O2 sensor.
Need to know if I should plug the ported vacuum orifice from the crankcase to the manifold - since the crankcase gasses are now being suctioned into the exhaust and filtered air coming in through a breather cap.
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Or should I leave it alone. I'm just trying NOT to have oil vapor spraying on my intake valves.