The Porsche 911 3.0T Carrera GTS / 4 GTS 450hp (2016 - 2018 (991.2)) produces 450bhp and 550Nm in standard form. Our Stage 1 ECU tuning file raises output to 520bhp and 660Nm, a gain of 70bhp and 110Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.