The Bentley Continental GTC 6.0 W12 Bi-Turbo 630hp (All) produces 630bhp and 800Nm in standard form. Our Stage 1 ECU tuning file raises output to 680bhp and 900Nm, a gain of 50bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.