The Chrysler 300C 5.7 Hemi V8 363hp (2011 ->) produces 363bhp and 534Nm in standard form. Our Stage 1 ECU tuning file raises output to 385bhp and 555Nm, a gain of 22bhp and 21Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.