2011 ->
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Order This File Ask a QuestionThe Jeep Grand Cherokee SRT8 6.4 Hemi V8 475hp (2011 ->) produces 475bhp and 637Nm in standard form. Our Stage 1 ECU tuning file raises output to 495bhp and 655Nm, a gain of 20bhp and 18Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.