The Porsche Boxster 2.5i 204hp (1996 - 2004 ( 986 )) produces 204bhp and 245Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 280Nm, a gain of 16bhp and 35Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.