OK, ok, here's the info on the oil separator.
Looked into just buying a 240D separator, but they are $127 now and that's not within the scope of this test (or within my budget for that matter, thanks to bigbabboon).
Here's the stock separator removed from the housing and filled with 3m polishing pad (the fine mesh stuff, one piece is hose-clamped to the vacuum side pipe in the plastic top). The drain tube to the case was cut off and flared so I could use a hose with clamps for the drain. I had to glue-in a fitting that reduces down to 1/4" barb for the vac line hose. The rest is pretty much stock except I cut the radius off the hard plastic tube from the VC to the separator.
Here's top view:
And here's front view:
And here's where the intake pulls from (stock nipple on the air tube in R side of pic):
