| i had my truck reprogrammed at the dealership, and it has gottin better mileage. but this weekend went on a trip and set the cruise at 70 and had a freind following he was going 76 in a stock dodge with stock tires. i have an edge/attitude and have set for my 305's and it is still off. are the trucks speedo off from the factory. the computer said it got 15-18 miles a gallon, but it is still off. any help would be helpful. |