Reviewed By gerardo h (Chicago, IL) Reviewed for a 2010 Jeep Grand Cherokee —3/23/2015 8:07 PM
Very easy to change tire size and other settings..
Reviewed By Jason A (WALLINGFORD, CT) Reviewed for a 2009 Jeep Grand Cherokee —5/6/2017 6:31 PM
This tuner is really is everything it's advertised as. I don't use many of the features yet but with a little tinkering it's easy to navigate the menu options. The performance tunes work really well. Really woke of the 5.7 HEMI in my Jeep. All touch screen and if you want to make it your primary monitoring system it mounts nicely above the dash. Highly recommend this for anyone looking for some extra performance or even wants to get a little better gas mileage.
Reviewed By William S (Dallas, TX) Reviewed for a 2013 Jeep Grand Cherokee —1/22/2016 7:16 AM
I would definitely recommend this tuner/programmer to any car enthusiast that is looking to improve performance in their car. I will say that the canned tunes (the ones that are preloaded on the Trinity) did improve my car (Jeep SRT), but nothing like a custom tune that you can get from someone who knows what they are doing or one you can get when dynoing your car. The interface and software was really easy to use as well as the logging for the custom tuner.