The Porsche Panamera 2.9T V6 4S 440hp (971 - 2020 ->) produces 440bhp and 550Nm in standard form. Our Stage 1 ECU tuning file raises output to 510bhp and 780Nm, a gain of 70bhp and 230Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.