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  1. T

    EFI Live Fuel Economy

    I may as well try an EFI tune and see what happens. Can always go back to the Edge if it does better. I did use my GPS to correct the distance traveled.
  2. T

    EFI Live Fuel Economy

    I have two Duramax 4x4 trucks. My 2008 has EFI and my 2007 Classic has an Edge controller. Both have exhaust and air cleaners. My 2007 has 36 inch tires and a six inch lift. It gets 13MPG hwy. I wonder how it compares to everyone elses mileage? I am willing to replace the Edge box and program it...
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    2008 GMC Brake Issues

    H0101 is not listed in my tune?
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    2008 GMC Brake Issues

    I am having a problem with my truck and am looking for help if possibe. The problem I have is the truck develops a problem shortly after driving it. The dash says service trailer brakes and the brake light and ABS indicators light up as well. The big issue is as soon as it does I have no trailer...
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