I purchased a level 3 for my 2019…
I purchased a level 3 for my 2019 diesel Ford F-350. It arrived quickly and only took seconds to install. Drove the initial 150 miles with only horsepower noticeable, fuel economy negligible. Went on a 500 mile trip that the truck always got 17.7 to 17.8 mpgs. Drove the same speed, posted speed limit, and got 20.2 mpg,not the 5-6 mpg they guaranteed it would get. It feels like around a 50 horsepower gain. I am considering sending it back as it is only getting half the fuel economy they guaranteed 😩