The Mercedes GLB 200d (2.0D) 150hp (2019 ->) produces 150bhp and 360Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 440Nm, a gain of 50bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.