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  1. J

    Turning motor down?

    I was look at a truck with a ISX-450 in it, how far can that be turned down in the computer to, get better gas milesage? but still run the hills good? GJ
  2. J

    Three axle Rig

    Are three axle (heavy D'S) rigs worth the money put into them compaired to the income? Thank GJ
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