German tuner TechTec has a series of power-upgrade stages for the BMW 1-Series M Coupe that can take output up to 450 PS (331 kW / 444 bhp)...
German tuner TechTec has a series of power-upgrade stages for the BMW 1-Series M Coupe that can take output up to 450 PS (331 kW / 444 bhp)...