The Porsche Cayenne 4.8 Turbo 520hp (958 - 2014 - 2017) produces 520bhp and 750Nm in standard form. Our Stage 1 ECU tuning file raises output to 640bhp and 950Nm, a gain of 120bhp and 200Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.