Reddit mentions of EMPI 17-2941 EMPI OIL FILLER & BREATHER BOX, VW Bug, Baja, Volkswagen, Sand Rail, Sand Buggy

I currently use an aftermarket paper filter on my '69 and it definitely improved my performance (not drastically, but the engine sounds and feels like it just got a new set of lungs) but it took me a while to get there. There are paper filters that sell for about $20 with the ability to attach the blow-by like this one. I had to recalibrate the carb a little after but it definitely improved my performance for a while till it started getting clogged by oil. It got clogged with oil because there was little travel in the tube from the blow-by to the air filter so all the oil vaporized and then got trapped in the filter, and then excess oil passed through the filter and gunked up the top of my engine :(. I bought another one (because there so dam cheap anyway) and set up a much longer coil of tubing to the right of the fan shroud to remedy this. The appropriate way to prevent the oil buildup than my tube coil is to install a breather box like this one. But these things are too expensive for me right now so I'm sticking with my makeshift one.