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  1. EFI Live
    I see a lot of guys making 50hp tow tunes, 80 hp tow tunes, 150hp race tunes and so on, so how do you know the HP for the tune when you create it? Is it just based on what you know a truck with similar modifications has will do or is there something in EFI that tell you this? Thanks Matt
  2. Interior
    I have a 2006 3500 crew cab. In order to operate the power windows and radio the truck needs to be running. Most vehicles I have owned will work these accessories with the ignition on but with the engine not running. Is there a programming method to change this? Is this situation normal for this...
  3. Towing & Hauling
    I just picked up a 73K GMC SLT Crew 4WD short LBZ, and will be towing a double tag car hauler to Moab Utah from Atlanta, weighing approximately 14000#'s. I did this last year with an 01' and got about 9 MPG running 80 or whatever in strong headwinds much of the way. We were loaded heavy. I...
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