Reviewed By Josh A (killeen, TX) Reviewed for a 2006 Chevy Silverado —3/25/2015 8:23 PM
Easy to install and can see a huge difference in the performance in my duramax.
Reviewed By Eddie C (NEWPORT, NC) Reviewed for a 2007 Jeep Grand Cherokee —3/20/2015 8:16 PM
Does the job as advertised. Recently lifted my jeep and put 31" tires on. Prior to installing the calibrator, the speedometer was off 7 mph. When reading 55 on speedometer, GPS showed me going 62. After calibrator installed, speedometer is dead on with GPS speed tracking. Would definitely recommend and may upgrade to the max energy software.