I didn't except GREAT MPG's but I did except atleast 13-14, But I also expected it to have MDS because I was told it did by the salesman!

I also have a hard bed cap, which didn't make ANY difference in MPG..

-ThaChad

 

im tellin ya i think its because of the hard bed cover ...meaning smoother line for the air to travel not getting wind drag by the tail gate imo.
and my city drivin is country roads 55 mph or so. unless the overhead lies witch it is off a bit in all trucks

 

55 on a strait roads would be considered highway.

and as for driving like a grandma. i would define that as keeping the rpm under 2k on acceleration from a full stop.

and if someone is getting 12mpg driving lead foot, then that is impressive numbers considering the size of the truck

 

My 07 Hemi Mega Cab 4x4 would get 11-12 in the city and 15-16 on the hwy. I sold it and bought a 08 Cummins Mega that after 25k miles would only avg 14-15. I think you may have a slight problem with your Hemi. I did have a after market intake set up AFE and saw a 1 mile increase in milage on my Hemi Mega.

 

yea, 55 straight road is definitely highway to me.

 

Yep, sadly them govt. emission friendly 6.7 CTDs ain't what the venerable old 5.9 was. Could run them suckers on agricultural diesel if you wanted to, had more power, were readily tuneable and best of all, got a hell of a lot better mileage to boot...