I plan to buy or make one too and i'm very interested by the feedback or experiences of the members here
when i've dismantled a d24 head i had 3 mm thick hard gunk on the valves and it doesn't help the engine to breathe because it's not very aerodynamic....
those pcv systems crap the all engine and there is not only oil but smoke from combustion : that's mean it's abrasive and wear out all the movings parts like soft valves guides and pistons......
