The Porsche Panamera S 4.8 Turbo 550hp (970 - 2009 - 2013) produces 550bhp and 750Nm in standard form. Our Stage 1 ECU tuning file raises output to 590bhp and 800Nm, a gain of 40bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.