Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - BMW 4 Series (F32-33, F36) (2014 - 2020) 425d (224 HP/ 165 kW) Torque Increase (NM):94Economy Gain (MPG):20Power Gain (PS):52RaceChip RS Tuning Box - Bluetooth Version with App ControlThe bestseller of the RaceChip tuning boxes. Completely newly developed optimisation software with engine-specific tuning,... MSRP: £308.00 Add to Cart The item has been added Compare