OUt of curiosity, i was wondering if anyone has any small tips to improce gas mileage for my truck and what kind of gas mileage does everyone else get. I have an 03 2500 HD 6.0 with a K&N cold air intake and a custom computer tune w/ 4:10 gears. I know with a truck like this im not going to get great gas mileage but its worth a shot. Post your gas mileage and if you know of anything else that can be done let me know.