Air Lift Performance 3P Air Management SystemAir Lift Performance 3P Air Management package combines pressure based control with the ability to add ride height sensing technology with the upgrade to height sensors. While both types of air management have been utilized before, this is the first product to harness the benefits of both sytems instantly improving suspension control, performance, and vehicle ride flexibility. This Kit Includes: 3H 3P digital controller Integrated ECU + manifold