The Chevrolet Caprice 3.6 V6 301hp (2010 ->) produces 301bhp and 359Nm in standard form. Our Stage 1 ECU tuning file raises output to 320bhp and 390Nm, a gain of 19bhp and 31Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.