The Buick Lacrosse 3.6 V6 240hp (2010 - 2016) produces 240bhp and 305Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 330Nm, a gain of 20bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.