I bought JohnJB's PC for my 2018. Instant shipping, thanks. I will agree with everyone else on the difference for the 2016+. Major change in feel. I suppose I am not as much of a speed demon as most on here, as I am finding City 1-2+ to be the sweet spot for me currently. But, it's only been a day. My suspicion is that my mileage will likely worsen, as I do see the truck downshifting more frequently in stop-and-go driving now than without it. But again, I'm still adjusting to the sensitivity. So far, money well spent.