Unlocking the full potential of the N55 engine requires precise signal tuning to safely increase boost pressure. If you are looking for a highly effective, plug-and-play power increase without permanently re-flashing your factory ECU, we supply the premium RaceChip GTS5 Black Tuning Boxes. By safely intercepting sensor signals, these advanced tuning modules optimize boost, fuel, and ignition parameters to deliver instant horsepower and torque gains across the entire rev range. 

Keep your N55 engine in check with a range of upgraded coilpacks for the N55 from MMX and Genuine BMW, cap off fuelling maintenance by considering new Bosch fuel injectors.