Most Popular Edge for 2021 GMC Sierra 1500

Works pretty good. I get a mile to the gallon better. When I tow a 13000 lbs fifth wheel camper it really does a great job. More hp and 1.6 mile to gallon better. Now the truck doesn’t shift gears as much.

Not a huge difference, towing my 28' travel trailer, but I do appreciate the firmer shifts and ability to see more engine parameters on screen. Over all, happy with the product. Easy to install and use.

Easy plug and play 87 octane tune gives better throttle response and shifts reprogrammed the speed limiter a bigger speed on a Chevy Avalanche and it worked perfectly plug and play install took 10 minutes which was mostly running the cable to the OBD port

I love it and the customer service is the best I’ve ever seen

The Edge CS2 won't pull the PID list for my van, so I just get to see the standard PIDs/guages and cannot update to additional PIDs. Not what I was hoping for but it's good with those standard PIDs. Not sure it's worth the price for MPH, Temp, Voltage, and RPMs.

I wanted CS2 to get eyes on my trans temp in my 1997 Ford Powerstroke XLT when I am hauling my camper. When the product arrived (a couple of days before I was expecting) I hooked it up to my computer per the instructions. One easy to follow download and twenty minutes later it was ready to go into the truck. I went out and plug it in (note: the OBDII port on my truck had a black cover on it and was located on the passenger side of the transmission hump under the dash) it would not power up. Hit the trouble shooting guide and it said check the cigarette lighter fuse. Bingo that was the culprit. For reference on my truck it is the #16 fuse which is the fuse in the upper most right hand corner of the fuse box under the steering wheel. So far I have been happy with the product. I have eyes on the trans tempt and new goal to see my truck produce 20lbs of boost (note the CS2 insight is only a monitor and will not help me get closer to this goal but it will let me see it when it happens). I was also pleasantly surprised with how stout the window mount was for the unit. It solid and holds the unit steady allowing you toggle threw the menus with one hand.

It works! Seems rather flimsy. To go from screen to screen is pretty complicated. (Although I'm not the most techno Savey person either!) But in the end it did improve my mileage by a solid 3mpg! So that makes it worth having! I have it on an 07 chevy Duramax used for towing, for that it does a good job!