The Porsche 911 GT3 3.6i 415hp (2004 - 2011 ( 997 )) produces 415bhp and 405Nm in standard form. Our Stage 1 ECU tuning file raises output to 435bhp and 430Nm, 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.