The BMW 3 Series 318i 143hp (E90/E91 - 2010 - 2011) produces 143bhp and 190Nm in standard form. Our Stage 1 ECU tuning file raises output to 157bhp and 216Nm, a gain of 14bhp and 26Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.