The EPA does not publish official fuel mileage data for this vehicle, therefore I have used the Edmunds.com road test data as well as Intellichoice.com data.
Transmission is a Getrag G-56 6-speed manual. Rear end gearing is stock (3.73).
Tires are 265/70/17 Scorpion Pirelli STRa, E load rating (the ones that came on it)
Rated payload capacity is 2,635 lbs.
Rated towing capacity is 13,635 lbs.
Build Thread:
Current Mods:
Removed diesel particulate filter (DPF)
Removed diesel oxidation catalyst (DOC)
Removed NOx adsorber
Removed EGR system
Removed intake throttle plate
Re-routed CCV vent to atmosphere
Smarty Jr tuner: fuel economy tune, most advanced timing
Upper grille block
Lower grille block
Tires at 75 psi (max sidewall is 80 psi)
Using block heater to pre-warm (750W)
Dual 150W oil pan heaters
Tonneau cover
Winter AC compressor disconnect
Engine oil: Amsoil Series 3000 Synthetic 5W-30 HDD
Differential oil: Amsoil Severe Gear Synthetic Extreme Pressure Gear Lube 75W-90
Tranny fluid: Castrol Transmax ATF+4 Full Synthetic
Engine blanket & insulation
Homemade ram cold air intake
Front belly pan (under engine compartment)
Fog light hole cover
Kill switch
Disconnected intake grid heater
Schaeffer's Diesel Treat 2000
9-inch side skirts
Driving mods:
Pulse & glide
Engine off coasting
Generally keeping it under 55mph (1,670 rpm)
Timing lights
Shifting as low as possible
Route planning
Planned Mods:
Likely mods:
Smooth wheel covers
2000 W circulating heater
Tranny, differential heaters
Full belly pan
Exhaust manifold & turbo insulation
Defrost AC disable relay
Thinking about:
200 F thermostat
Alternator disable
Swap to 3.42 rear end gearing
Less likely, but maybe someday:
Turbo swap
Aerodynamic bed cap
Fender skirts
