Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - BMW Z4 (G29) (from 2018) sDrive 20 i (197 HP/ 145 kW) Torque Increase (NM):67Economy Gain (MPG):20Power Gain (PS):35RaceChip 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