04 Ram SLT 4x4 Hemi 5.7 4dr. 15 during the 4 day workweek commute. 13ish when driving around town.

 

15.1 with the mods. and a heavy foot (on occasion) I'd be in jail otherwise lol. i was around 13.9 when I got it ,a true mix of hwy and city. Gotta believe she'll do better on a long trip.

 

05 ram 4.7 2wd. dual 40 series flowmaster and velocity intake.
11.5 mpg

 

Just redid my calculations. (i just moved and have been offline for a while, ANYWAYS!) I'm getting an average of 15 regardless of how I drive. 3.7 with CAI an magnaflow. Did a comparison of the mileage with a set of 275/65/18 LT all terrains, and a set of '06+ 20" alloys. The difference was so little it barely even registered on the calculator. I still maintain that the ECU in the trucks is limited to what kind of mileage they can get. I've done various things to the truck one thing at a time, and noticed power, but no increase in mileage whatsoever. Doesn't making a motor more efficient and decreasing drag increase fuel mileage?

 

04 1500 Hemi quad cab 47k K&N air filter 14.1 city 19.3 highway 2 nights ago over a 140 mile trip using 87 octane

 

2006 Ram 1500 2wd Quad cab 4.7L Single inlet dual outlet FM 40 series and K&N CAI gets around 21 mpg until i get on the gas and it usually ends up at 18.3 at the end of the week on the cheap stuff.
I drive 30 miles non stop 1 way to work so that helps me out a little. i have also found out it gets the best mpg if you let it shift into 5th gear which is around 60 mph and set your cruise then bump it down to around 57 mph and enjoy the ride. The rpms usually sit at or around 1500-1600. This really only works in flat areas.

 

I know the feeling really want to do it the old fashion method run three tanks of fuel half way marking the mileage and the gallons that it takes then devideing down too mpg!! Thats a sure way and takes about a month or so!!

 

Not nearly enough with a blown plenum

 

05 Hemi 4x4= 12.5 mpg :-(

 

Wish I could say that! 3 full tanks in mine is an average of 4-5 days...ugggh