The Mercedes GLB 250 / 240 (2.0T) 224hp (2019 ->) produces 224bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 250bhp and 400Nm, a gain of 26bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.