The Buick Regal 1.4 Turbo 140hp (2010 ->) produces 140bhp and 200Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 270Nm, a gain of 30bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.