know what to expect
my overall satisfaction is a bit low, but that's not the programmers fault, it's Nissan. they limit the parameters that can be adjusted a LOT. At the end of the day, the only noticeable improvement was throttle restriction. Nissan limits percent of throttle open below 60mpg, which makes stomping on it no fun. However, with that restriction released, I can now get 100% from dead stop...makes a much more exhilarating take off. On performance mode, I seemed to have lost some MPG, but that's the price. If you have ford, gm, chevy, this thing can do quite a bit more.