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ShinerBock's avatar
ShinerBock
Explorer
Jul 03, 2019

Performance/Efficiency versions of Cummins 6.7L

It appears that Cummins is doing the same thing to their 6.7L engines that they have been doing with the larger on highway engines for the past few years by making a performance version and an efficie...
Tow Vehicles
eHoefler's avatar
eHoefler
Explorer II
Jul 04, 2019
Compression is only one part of the puzzle. The lower compression motor has a higher output turbo, which translate to higher compression when running hard. More air + more fuel = more power. As far as fuel economy, I am with in 1/2 mile per gallon of my old truck, pulling the same trailer and the same roads. With just over 2,000 miles on this beast. As miles get put on, I suspect the milage will only get better, like my 4 previous Rams.

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