The Porsche 911 4.0 GT3 510hp (2019 -> (992)) produces 510bhp and 470Nm in standard form. Our Stage 1 ECU tuning file raises output to 540bhp and 490Nm, a gain of 30bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.