Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - BMW 4 Series (G22,G23,G26) (from 2020) 420d Mild-Hybrid (190 HP/ 140 kW) Torque Increase (NM):50Economy Gain (MPG):20Power Gain (PS):29RaceChip 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