The air bags a good idea ,Will help with the ride when empty. Any thought on the speed limiter set at 85. Fuel MPG? We have a 22000 LB 5 wheel and we got 6 miles per Gallon on our trip to Fla, That Sucks. Our old truck got 8 MPG (2003 F-350 Dually) Not really happy with the way new truck...