I've had the catch can installed for around 7 week now, its caught around 3mm. Most of the collection is water with a wee of oil and bit of mild mayo in the bottom (might put it in my sandwich later as a mayonnaise replacement ) - this normal but it should be called a water/oil catch can .

My set-up has a pipe (with holes) which runs down to the bottom of the can from the intake nozzle to make the vapours/air pass through the stainless steel brillo pads rather than taking the closest route which is back up through the mini breather. Intake manifold port and intake tract nozzle have been 'capped' off.

Hopefully it should help with reducing detonation and stop shitting up the Throttle body and MAP sensor, as for its applicability for N/A engines i dont know if its worth it? I presume there is more blow-by gases being produced when boosted.