The BMW N55 engine found in the M135i and M235i is a fantastic engine with a wonderful soundtrack and tuning capabilities. One of its weak links is when it comes to pushing the vehicle on the track they can suffer from oil starvation. MMR Performance has produced a bolt in baffled sump with 7 one way control flaps. This allows for a reduce in surge and maintain more constant oil pressure.
7 one-way oil control flaps and specific baffling
T-6061 anodised MMR sump baffle
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