Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - BMW X4 (G02) (from 2018) 25d (231 HP/ 170 kW) Torque Increase (NM):94Economy Gain (MPG):20Power Gain (PS):53RaceChip 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