Reviewed By JON G (Adams, NE) Reviewed for a 2000 Jeep Grand Cherokee —3/1/2009 10:15 AM
It definitely helps with mileage and hp.
Reviewed By Bruce S (MARION, WI) Reviewed for a 2005 Jeep Grand Cherokee —4/17/2014 6:39 AM
Installed the program on my Jeep, you can program thermostat, tire size and regular or premium use fuel settings. Seems a little snappier, off the line but as far as huge performance gains, I'm not seeing it . Gas mileage is up approx. 1 to 1.5 mpg so over time it will pay for itself. i originally bought the unit to erase DTC codes after the N23 recall. It erases the DTCs and is very easy to use. Had bought a Superchips programmer but they do not support the 2005 Jeep 4.7 liter motor, Hypertune
Reviewed By Casey Delorenzo D (Budd Lake, NJ) Reviewed for a 2005 Jeep Grand Cherokee —1/21/2014 12:08 PM
I got this tuner looking for something that could tune and show engine parameters. I chose this over the Flashpaq as I do own an Android device and I recommend doing that as it does have many extra features over the Flashpaq. I didn't expect too much of out this in terms of power, but it definitely helps pull 35's.