Confirmed.. 3+ hours on a left turning track this weekend and no BOV spray and no appreciable accumulation in the catch can. At least I know it's not my turbo.

I still find it odd that with only the single factory vent setup, I'd be catching so much more "hydrocarbon soup" (but no motor oil) on right hand turning events. You'd think it'd all have to vent out regardless of the direction the car was turning.