I had the Air Force 1 installed as soon as we purchased our toad, in July of this year. No fuss, No muss. Just connect the air hose and drive away. Very clean install and it works as advertised.
I do recall my installer asking about which chassis we had and remember him saying Freightliner's air system provided for an easier install than others. We only have about 5000 miles towing but so far I'm pleased.
2015 Entegra Anthem 450HP-1250ft lbs of torque
2015 Jeep Grand Cherokee
Roadmaster Falcon 2 All Terrain
SMI Air Force 1