The Porsche Cayenne 4.8 Turbo 500hp (957 - 2007 - 2010) produces 500bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 550bhp and 790Nm, a gain of 50bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.