[ROFL1]
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+1 the cummins reaches max torque at about 1600 RPM, anything over that you are just adding fuel to a fire that is already lit. RPMs are not your friend when it comes to a real diesel engine.
the torque curve on my 05 hits max at 1600 and does not drop off at all until 3200. it cruses with a load at 70 mph just under 2000 rpm. this seems to be its sweet spot for MPG. and quite honestly with my 35 footer and either the boat or trail rig behind it the 70 MPH is plenty fast.
OP: Did you consider chipping the computer? Often these kits come with a small display that lets you select from performance/mileage settings, and display additional system information.
I mentioned it in an earlier post
H.
Add a camper shell to decrease drag, it may help a slight bit, and keep your gear dry, and in a lockable area..
Dudes it'a a TOYOTA, this topic has gone on for 8 pages, time for a new truck Geesh.
Switch to synthetic diff fluid?
Convert to manual hubs?
Add the extra weight to the equation and you're back to square 1...possibly -1.
Oh we're sorry man, you must have us mistaken with those who actually have somewhere to be. [Tooth]
If you change your page view settings in the user cp you'll only see two pages...