Fuel Master

[JET]

I would be willing to try it on the Sentra. I always get 32-33 mpg with the mixed driving it sees. Basically the same commute all the time. I don't see how it could work, but I have definately seen stranger things. I believe it is like the article I linked to says, it is a placebo effect. You think you are saving gas, so you don't step on the gas as hard as you used to, etc. In that case it actually would work, although the device itself is not actually doing anything, it is your actions that are.