For some off you. guys with tuner programer . Are you really getting more MPG's with it ? Or. just Believing what your tuner reading is telling? I just notice something today. . My Edge.programer is saying that @ 65 mph averaging 17-19 mpg .highway . in cruise control , With 325/70/17 all terrain tires, 4.56 gearing , 5.4 , fx4 , Screw , 6 inch lift , and 27 gallon gas tank . after my last gas pump ,my speedo clock said , 309 miles using 24 gallons of gas . i dont know how to calculate this thing but , its seems that, My Edge programer is not telling the truth .

 

309/24=12.8 Seems to be a bit off..haha I'm running 325/65/20 with stock 3.73 gears 6in lift and a SCT and get right around 12