Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - BMW X3 (E83) (2003 - 2011) 35d (286 HP/ 210 kW) Torque Increase (NM):109Economy Gain (MPG):20Power Gain (PS):42RaceChip RS Tuning Box - Bluetooth Version with App ControlThe bestseller of the RaceChip tuning boxes. Completely newly developed optimisation software with engine-specific tuning,... MSRP: £258.00 Add to Cart The item has been added Compare