Just finished turbo-ing and tuning a '07 VE V6 Omega. The Turbo is a water cooled GT35R Journal bearing type. I have one problem that is doing my head in... the oil drain from the turbo. Because it is a low-mount, I have got a VDO scavenge pump running off the drain line back to the rocker cover. The pump runs off a turbo timer to continue after the ignition is switched off, I have a one way check valve on the oil inlet side coming from the pressure sender under the oil filter, and a 1mm restrictor. The drain line and the VDO pump both sit below the center of the turbo, and are connected by a 90 degree elbow from the drain port on the turbo. THE PROBLEM... I'm still getting oil being pushed past the bearings. Do I need a vented sump? A better pump? Should I need the restrictor? Do I need a one way valve leaving the turbo as well? Any help would be awesome. Thanks in advance.