Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - BMW Z4 (G29) (from 2018) M40 i (from 07/2020) (340 HP/ 250 kW) Torque Increase (NM):71Economy Gain (MPG):20Power Gain (PS):63RaceChip RS Tuning Box - Bluetooth Version with App ControlThe bestseller of the RaceChip tuning boxes. Completely newly developed optimisation software with engine-specific tuning,... MSRP: £408.00 Add to Cart The item has been added Compare