The Buick Envision 1.5 Turbo 165hp (2018 ->) produces 165bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 195bhp and 300Nm, a gain of 30bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.