The Porsche Cayenne 3.6i 300hp (958 - 2010 - 2014) produces 300bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 320bhp and 425Nm, a gain of 20bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.