The Cadillac CTS 3.6 V6 340hp (2014 ->) produces 340bhp and 386Nm in standard form. Our Stage 1 ECU tuning file raises output to 362bhp and 402Nm, a gain of 22bhp and 16Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.