The Bentley Continental GTC 6.0 W12 Bi-Turbo 610hp (All) produces 610bhp and 750Nm in standard form. Our Stage 1 ECU tuning file raises output to 680bhp and 900Nm, a gain of 70bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.