Reviewed By Stan R (Channelview, TX) Reviewed for a
—1/23/2012 5:57 AM
Plugged it in and it did the tuning. Noticed change in power and mpg immediately.
Reviewed By George S (Brownsville, OR) Reviewed for a
—4/22/2015 8:09 PM
Speedometer is dead accurate with 37x12.50r20 Nitto Trail Graplers on my 2013 Ram 2500 6.7L Cummins.