Quote:
Originally Posted by Diesel_Dave
Not to take anything away from the guy with the Excursion (it is impressive), but there's a big difference between getting your in-cab display to read 32.8 mpg one time cruising down the highway and averaging that kind of mileage over 1,000 miles of commuting. My best overhead reading on my 40 mile trip to work is 44.7 mpg. Was that a good day? Yes. Do I believe I was actually getting almost 45 mpg? I wish.
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I talked with the Excursion guy a bit thru PM. He did full fills on that trip, it was over a very long distand, all highway travel and the overhead matched his actual very cloesly. He seems to have been very honest in his reporting. I agree that the overhead is usually optomistic, however his tuner seems to have calibrated it.
I have an Excursion as well and have had my overhead read as high as 35 mpg, but the actual was 18.xx. My tuner threw the Overhead reading way off. I have never done any highway trips so I don't know what that would be, but I average 17mpg getting grocerys and running around town. I'd estimate my Excursion could get 24mpg on a pure highway trip.
Please keep on pushing the limits with your Cummins, I'm excited to see how far you can push it.....Is 40mpg possible
