The Porsche Cayman GTS 2.5T 365hp (2016 -> ( 718 )) produces 365bhp and 430Nm in standard form. Our Stage 1 ECU tuning file raises output to 420bhp and 510Nm, a gain of 55bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.