I did the edge ez, with a drop in air filter replacement. The chip is something like 65hp/200lbs, I also have 373 in the rear. On the 35's my truck is running less rpm's at speed which is helping my mileage. Now when I am just driving around I see somewhere in the range of 14-15, but when I set the cruise on the longer drive it in the 18-19. No calibration on the speedo, so at 70 on the speedo I am at 1700 rpm's and 79 mph, (or so) you know give or take.
Toby shut your month and have fun in the rain.... Thanks for the eight mile road picture
My local Dodge dealer did my speedo adjustment for the larger tires for $84. The Superchip has it built in: http://superchips.com/product.phtml?...mk=626&msg=%2B