I installed my CC at my first oil change @ 1250km. Now I made my 5000km oil change (so basically I put 2500 miles on it) and tried to drain the CC only to see it was bone dry. I took it off and the drain valve, took a Q-tip to scrape it inside and indeed, no oil at all. I noticed oily residue on my Boomba BOV adapter so I unpluged the hot side rubber coupler and it was dripping oil.... I installed the CC per the instructions. The line with the check valve on the top port of the CC to the port on the manifold and the lowest port of the CC to the valve cover port. The check valve is working but I'm not really sure that it's the right way: I can blow through the line that has the check valve (so at the manifold) but can't in the straight trough line (at the valve cover). Normally you want the excess of pressure of the valve cover to be sucked by the manifold vaccuum and block the boost pressure of the turbo from going to the valve cover, right?. If I remember correctly the hose with the check valve was already preinstalled, I only plugged it to the top port of the CC.
For now I installed the stock line to be sure not to screw anything.
For now I installed the stock line to be sure not to screw anything.