| I have a 3500 2008 Crew cab Dually with 7,000 miles. I am getting around 9 MPG towing a 10,000 lbs trailer. Empty in town I am getting about 12 mpg and empty on the road around 15 MPG.
I installed a Hypertech chip and a Banks intake system. After 3 tanks of gas, I did not experiense much gain in MPG, maybe at best one to one and a half MPG.
Any suggestions? |