The Jeep Grand Cherokee 3.6 V6 VVT 286hp (2011 ->) produces 286bhp and 347Nm in standard form. Our Stage 1 ECU tuning file raises output to 300bhp and 370Nm, a gain of 14bhp and 23Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.