Maj, don't know for sure but our data showed decreasing oil pressure after WOT for 30 seconds with the busa, we changed to the high volume gear, saw less drop. Oil pressure was also 15 at idle after the run, 23 with the HV. Don't know if the oil thinned or had less at the pick up. We usually run extra oil in them to try to ensure some is always in the sump.
I was not recommending higher pressure, just more volume.