il take some photos when i get home. thats looks like an exact copy of my oil cooler plate, as you can see it forces the oil only 1 direction, and it must pass through it and return from where its been sent to travel to the other side of the plate. get some above shots of your plate, only reason i say this can i can see a flat on the inside of your plate.
this is the plate design similiar to what i have for my turbo...
http://www.jdmpartswholesale.com/cdn/400/oil-filter-sandwich-plate-civic-integra-turbo-d15-d16.jpg
you would have to look into it some more, as im not sure this would seriously affect oil flow. but if 100% of your oil has to pass through your turbo, i def think you should look into it due to having such a large amount of oil flow and passing it all through the turbo lines. i dont know enough, maybe ask on clubna-t as ive already seen your a member
i only wanted to mention it, it might not be an issue, i might be a complete idiot. i probably am a complete idiot