The Porsche Panamera GTS 4.8 V8 430hp (970 - 2009 - 2013) produces 430bhp and 520Nm in standard form. Our Stage 1 ECU tuning file raises output to 450bhp and 540Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.