Why do I want a height sensor based control system instead of pressure based?
Pressure based systems have proven to be very inaccurate. First, typical pressure sensors have an accuracy of +/- 5 psi, which can result in as much as 1″ in ride height on lightweight vehicles. Second, pressure sensors don’t account for changes in load. As your vehicle load increases, the vehicle drops, and your air spring pressure increases. A pressure based control system will reduce the pressure in the air springs back to the target pressures, which will further lower the vehicle. The e-Level System uses TruPositionTM height sensors and will provide adjustment accuracies of better than 1/8″ at the wheels as well as compensate for changing vehicle loads by adding whatever pressure is necessary to obtain the target vehicle height.
