thats also true for the standard pcv relocation . Kuah also stated that the standard pcv relocation is ineffective and one needs to pick up off the exhaust valve covers however i have always wondered if that is indeed the case. not sure how to measure it other than putting a sensitive pressure gauge on the valve covers. It also appears that there are galleries connecting the exhaust and intake sides anyway and also the left and right banks via the lower plenum. Maybe the real issue is quickly draining the oil out off the heads like Kuah has on his race motor.