Everyone knows S55 motors can suffer from oil control issues causing oil to blow through and coat the intercooler and charge piping, gunking up intake valves and the VANOS system, which lowers the effective octane, and degrades overall engine performance. The higher boost you run, the worse these problems can become.
To solve these issues, BMS has came out with this Oil Catch Can- built from the ground up specifically for BMW turbo vehicles. While there are many other catch cans on the market, they all tend to fall short in various areas. It is built from 100% CNC machining with zero welding for a perfect fit and long life. The can itself has a lifetime guarantee. The hoses are larger in diameter than the OEM PCV piping, resulting in an increased, consistent flow rate as well as no excessive crankcase pressure buildup. The OCC retains the factory fully closed loop PCV operation preventing any vapors from leaking. The mounting locations are perfectly selected to minimize the line length for maximum efficiency and looks. Install is a breeze- takes about 20 minutes, all required hardware is included, and is 100% reversible. Simply unscrew the base of the can or use the drain plug to dispose of oil with the rest of your used oil during oil changes.