It's no secret that the BMW N54, N55 and N20 motors suffer from serious oil control
problems causing oil to blow through and coat the intercooler and
charge piping, gunking up intake valves and the VANOS system, lowering
the effective octane, and generally degrading engine performance. The
higher your boost levels the more apparent these problems become.
The solution to this problem has finally arrived. The BMS oil catch
can. While there are other catch cans on the market they all fall
short in various areas. Some are mounted on the hot/turbo side of the
motor preventing proper vapor condensation. Others utilize hoses that
are too small and runs that are too long to allow proper PCV
ventilation causing internal motor / ring sealing issues. Some have
insufficient or no internal baffle system while others have internal
baffles systems that are too restrictive for the N54 motor. Most are
simply repackaged oil catch cans from smaller / lower power motors
shoe horned in to place in the N54 engine bay.
To solve these problems BMS designed their oil catch can kit from the
ground up specifically for the N54 application. It features 100% CNC
machining with zero welding for a precision fit and long life. The can itself is guaranteed for the life of the vehicle. The
hoses exceed the OEM PCV piping in diameter and that flow rate is
maintained throughout the entire oil catch can ensuring no excessive
crankcase pressure buildup. The N54 mounting location is out of the way
under the cowl allowing for shorter lines, more efficient operation,
and a very stealthy look.
Install takes around 20 minutes, includes all required hardware, and
is 100% reversible. Simply unscrew the base of the can to empty it's
contents every 3-6 months.