My 04 4.7L was worse than that. Best I ever got was about 14.5 highway, with 3.92 gears and 4.56 gears. That engine is a dog in the QC, and it was even 2wd!
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2014 Ram 1500 4x4 Outdoorsman
Retro Shop Custom FXR Projectors | Diablo inTune | Moe's 87mm TB | BT Oil Catch Can
Toyo A/T II Tires | Bilstein 5100 Front & Rear Shocks | AirLift 100 Air Bags
Bestop PowerBoards | RollBak Bed Cover | BedRug |