The Porsche 911 3.6i GT3 RS 381hp (1997 - 2006 ( 996 )) produces 381bhp and 385Nm in standard form. Our Stage 1 ECU tuning file raises output to 400bhp and 415Nm, a gain of 19bhp and 30Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.