I had one on both sides and the drivers side stayed bone dry, even after installing a blower.
That's because the drivers side is the filtered air inlet. Air enters the crankcase on that side.
You understand that the system operates as a vacuum right? It does not pull air in from the intake, the intake pulls air through the pressure control valve. Thus relieving excess crankcase pressure. My point in my original statement was that the drivers side never collected anything, NA or FI.