The Porsche Panamera GTS 4.8 V8 440hp (970 - 2013 - 2016) produces 440bhp and 520Nm in standard form. Our Stage 1 ECU tuning file raises output to 450bhp and 540Nm, a gain of 10bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.