6.7 dodge or 6.4 ford?

It is putting guys back in the mid to high teens. You can forget getting an 8300lb truck with the aerodynamics of a brick wall over 20. The 250 and 275hp tunes are showing the best mileage. Its sad, but the reliable 6.4's are the tuned ones. The stockers don't stay together like the tuned and deleted ones.
 
anybody else, what are yall seeing on mileage. state your mileage and what tune or tunes
 
I would like to know how many miles these guys that are recommened 6.4 's have on there trucks? Boss has a 08 450 with 86k and is complete junk. has been back to dealer for 2 injectors both turbos and dpf. After that we did sct and dpf delete has left him 4 times and I have replaced rocker arms that break junk 3/16 stamped steel only 4hrs to get valvecovers off. I mean it runs good when it runs but this is a work truck if you can afford for it to be down 1week every 2 months go for it.
 
The more and more I read, I would choose the new 6.7L Power Stroke over the 6.4L and 6.7 Cummins.
 
20-21 at 70 unloaded is what i get. i get the same milage in the 250 275 and 310....anything lower than 250 the milage starts to decline.
 
is that with all that egr delete and stuff or with all of it still on.

Also does the tranny still hold up good if you are getting on it all the time?
 
i know a guy with one with out the delete and live wire haha he was getting 11 in town, and 15 on the highway now he gets 16 in town and 21-22 on the highway
 
was getting 16-17 in a 450 loaded down with a live wire and dpf delete until it blew up a 85k junk
 
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