The Rolls Royce Wraith 6.6 V12 633hp (All) produces 633bhp and 795Nm in standard form. Our Stage 1 ECU tuning file raises output to 700bhp and 950Nm, a gain of 67bhp and 155Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.