The Porsche Cayenne GTS 3.6T 440hp (958 - 2014 - 2017) produces 440bhp and 600Nm in standard form. Our Stage 1 ECU tuning file raises output to 480bhp and 650Nm, a gain of 40bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.