I lifted my truck nd got bigger tires. It shifted so awkwardly. I purchased this and installed and set everything within 5 min. For just setting the tire size and it adjusting shift points, this is kinda overpriced. I enjoy the ride now, i have no complaints so yeah id recommend to a friend who lifts theirs.
I always had sluggish throttle response, I installed level 1 software and it made a nice difference. My overhead mpg always settled down to 14.2 after a couple hundred miles. After 250 miles on level 1, it is still ticking up and is at 16.7. I do not plan on using level 2 or 3, as this is a 99 with VP44 and auto trans. The only reason I bought it was to try to fix the sluggish throttle response, and since it did, I will leave it alone now.