The Porsche Boxster S 3.4i 295hp (2005 - 2011 ( 987 )) produces 295bhp and 340Nm in standard form. Our Stage 1 ECU tuning file raises output to 310bhp and 355Nm, a gain of 15bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.