Postby smj999smj » Tue Feb 07, 2012 6:05 pm
Most of the so-called "chips" offered are nothing more than resistors designed to trick the ECM by giving it an incorrect reading and most of them do nothing but empty the cash out of your wallet. There are people who have used the Superchips reprogrammer that say they have increased gas mileage by 1-2 mpg as the increased power keeps them from "getting on the gas" as much. The biggest thing that helped improve my gas mileage is that I use the cruise control as much as possible and ease the gas pedal when starting off from a stop. I use regular unleaded in my stock 06 LE 4x4 and went from 16.5 mpg combined avg. when I first got it to about 18-19 mpg, currently. I tried using premium gas for a few tanks, but the gas mileage wasn't affected.