I was using a flapper delete fitting that leaked oil, even with a thicker o-ring. So I got rid of the flapper delete and got me a 1" flexible hose and a 1" to 3/4" reducer so it can fit on the BMS OCC. Problem solved.
Which flapper delete?
I used a flapper delete fitting from ADE. This gets rid of that fitting
2 years later hell yea!As an update, this double oring fitting never leaked a drop. Will run directly to intake pipe(somehow). Pcv port will be plugged with the stock fitting or perhaps a vta filter of some kind to relieve any potential crank case pressure that didn't get sucked into the intake.
Oil got past the first oring, probably because it can be wiggled around a bit but the second oring was visibly dry.2 years later hell yea!
E36 E46 E9X E8X E6X Valve Cover Breather Fitting
NO MODIFICATION NEEDED, this plugs right into the valve cover and uses two o-rings that are provided for perfect tight fitment Flapper Delete Fitting for N54 WILL NOT WORK WITH RALLYROAD FUEL RAIL THAT HAS A RETURN FUEL SYSTEM AS SHOWN IN PIC (NOT THE PURPLE FITTINGS) also known as the...vadersolution.com
Oil got past the first oring, probably because it can be wiggled around a bit but the second oring was visibly dry.