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330 Posts
I like everyone Else is keeping track of my mpg's and i have notested that the higher the setting on my juice w/att. the better my mileage is . the mileage setting is a joke , level 3x5 it was between 14 &16 mpg with very little highway driving and lots of driving like an old lady . this week i had it set on 5x5 drove it live a true Cummings owner black smoking when the time was right , my mileage was 17.5 with no highway driving :thumbsup basically my question is could i be causing any engine damage by long term driving on the highest settings 5x5 , timing issues or any thing else .