[2TheMaxx]

I'm using the Superchips Flashpaq and got a couple miles to the gallon better. The reason I wanted it was to recalabrate the speedo so your not racking up more miles than you really are putting on and there goes your warranty that much quicker. To get full benefit I run it in the highest setting. Lots of power and great milage. This mode is not for towing, I set it down for that. I really baby my truck because I'm after the milage. Its kind of fun though to can it every once in a while and hear the tires squeal like a sports car though. The superchips also reads all the codes and you can download updates from your computer onto the programmer and install them into the truck. I have done this once since I got the truck. Works for me.