The Porsche Cayenne 4.5 V8 Turbo 500hp (955 - 2002 - 2007) produces 500bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 530bhp and 780Nm, a gain of 30bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.