So the VG's actually decreased performance. so strange. Although that tells me that I did a great job designing a scoop that is clear of the boundry layer. So my next step is to install a dual pass oil cooler. Ordered one from ACS according to Wayne Blacklers advise as well as Wayne from Pacific oil coolers who assures me I should EASILY see at least a 10 degree drop in temps using the dual pass cooler. The install "might" require some glass work to clear the lower fitting, but that's a minor penalty for lower temps. We shall get there!