N54 Vacuum Side Oil Catch Can For BMW 135i, 335i, 535i, 1M (E Chassis) Options:Without BOV adapter and without OCC This is only recommended if

This is only recommended if you already have a turbo upgrade or plan on installing one in the near future as it can cause a slight pressure drop on the OEM IS20

Support for M Series & Competition specs: the S55 engine platform includes F80/F82 M3

Our Stage 2 fuel pump includes a single Walbro 305 (F90000265)

Built with a black powder-coated inlet pipe and heat shield

Dyno proven to gain 41+ whp and 39+ wtq

N54 Vacuum Side Oil Catch Can For BMW 135i, 335i, 535i, 1M (E Chassis) Options:Without BOV adapter and without OCC This is only recommended ifThe BMS vacuum side N54 OCC works in conjunction with our world famous boost side N54 oil catch can to prevent engine oil and PCV gunk from coating your intake valves and hurting engine efficiency under engine vacuum operation. Our boost side OCC separates oil traveling through the PCV while the engine is operating under boost pressure (e. g. heavy throttle) and our vacuum side OCC separates oil traveling through the PCV while the engine is operating