The Porsche Boxster S 3.4i 315hp (2011 - 2016 ( 981 )) produces 315bhp and 360Nm in standard form. Our Stage 1 ECU tuning file raises output to 335bhp and 385Nm, 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.