G-Power tunes the BMW M4 Coupe
G-Power is well-known for their tuning kits designed for BMW models. This time is the BMW M4 Coupe which received a serious package but the BMW M3 Sedan is compatible too. The company increased the total output of the standard 3.0-liter TwinPower Turbo engine thanks to a revised ECU unit and other minor tweaks. From the stock 431 hp and...