The Jeep Grand Cherokee Tackhawk 6.2 V8 Supercharged 707hp (2011 ->) produces 707bhp and 875Nm in standard form. Our Stage 1 ECU tuning file raises output to 740bhp and 918Nm, a gain of 33bhp and 43Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.