Add Wish List Quick view Add to Cart The item has been added RaceChip RS + App - Mercedes-Benz AMG GT 4-door (X290) (from 2018) 43 AMG (367 HP/ 270 kW) Torque Increase (NM):83Economy 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: £408.00 Add to Cart The item has been added Compare