The Porsche Cayman S 3.4i 303hp (2006 - 2013 ( 987 )) produces 303bhp and 340Nm in standard form. Our Stage 1 ECU tuning file raises output to 318bhp and 360Nm, a gain of 15bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.