Eddie Haskell
12-01-2003, 07:07 PM
What kind of differences have you seen in fuel mileage with a programmer/chip installed on your Duramax.
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ZFMax 12-01-2003, 07:24 PM Predator: 1-2 mpg improvement, running 40hp & 65hp Juice: basically the same as stock, running level 3 mostly DMAX2DAMAX 12-01-2003, 07:58 PM Quadzilla 70HP tune about +1-2mpg. I'm now running 110HP will post result after a tank or two. Then same with 135 & 165 if it doesn't limp or zing the alli. | ||