The Buick Regal 3.8 V6 240hp (2010 ->) produces 240bhp and 280Nm in standard form. Our Stage 1 ECU tuning file raises output to 270bhp and 310Nm, a gain of 30bhp and 30Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.