The Porsche 911 3.6i Turbo 420hp (1997 - 2006 ( 996 )) produces 420bhp and 560Nm in standard form. Our Stage 1 ECU tuning file raises output to 480bhp and 650Nm, a gain of 60bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.