The BMW 3 Series 318i (1500cc) 136hp (F3x LCI - 06 / 2015 - 2019) produces 136bhp and 220Nm in standard form. Our Stage 1 ECU tuning file raises output to 165bhp and 300Nm, a gain of 29bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.