The Dodge Charger SRT 392 6.4 V8 485hp (2011 - 2018) produces 485bhp and 644Nm in standard form. Our Stage 1 ECU tuning file raises output to 505bhp and 665Nm, a gain of 20bhp and 21Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.