For the R56 MCS seems like there are two sources of blow-by that we want to capture, off both sides of the engine. Right side to stop oil to the intake and valves, and the other side to the turbo.
I asked Riss this question but don't have an answer yet. In lieu of using 2 OCCs, could you plumb both sources into a Y which then goes to one side of the OCC, with the other port plumbed back to the intake manifold vaccuum?Has anyone done this yet? Does it solve both problems?
Thanks
Fig

 

Sure can, don't remember who but someones instructions show to
use tee's to run both sides into one catch can.

 

Bringing up an old thread as we have recently released our solution to this issue.

Over the past few months we have been inspecting and testing new methods of controlling blowby on the R56 engine. We have learned the inner workings of the valve cover and its system of check valves.

We have found, and tested thoroughly, that the check valve leading to the port on the side of the valve cover will always remain open regardless of situation, where as on the rear it will close under boost (very logical)

As such we released two products that when used in conjunction with each other block off blowby exiting the rear and directing all blowby through the side port, through our catch can, and pressure is allowed to return to the intake once clean in order to remain emissions compliant.

These products are our:
BSH R56 Competition Catch Can
and our
BSH R56 Direct Dual Boost Tap

If anyone has questions on these products, their function, manufacturing process etc, please feel free to ask. We look forward to serving you.