The Porsche 911 3.8 Bi-Turbo S 650hp (2019 -> (992)) produces 650bhp and 800Nm in standard form. Our Stage 1 ECU tuning file raises output to 740bhp and 890Nm, a gain of 90bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.