At their core, the Air Lift Performance 3H and 3P management options share the same controller and ECU + manifold with 32-bit processing, built-in Bluetooth (no external antenna), and an intelligent accelerometer for the most advanced and accurate adjustments on the market today. So what is the difference? It’s all in the height sensors. 3H comes with 4 height sensors, linkages, and sensor harnesses that are installed at each corner of the vehicle, allowing the system to measure the height of the vehicle. This gives you the ability to set and hit a height preset within a few millimeters of accuracy. Without the height sensors, the system only has a pressure reading of each corner, and won’t understand what changes in weight, such as a few friends along for the ride or loading up the back mean to the actual height parameters of the vehicle. Combining BOTH height and pressure, the 3H is the most advanced air management controller available.

If you think you might want to start in pressure mode and eventually upgrade to height for more accuracy, there are a few options. The most economical way is to buy the 3H up front and install the height sensors when you have the time, because you can still run in pressure mode. The availability of universal height sensor brackets (sold separately) as well as the built-in calibration tool, make installation easier. The other option is to start with a 3P system and then purchase the height sensor upgrade separately down the line. You’ll still enjoy things like mobile device control and over-the-air updates via the app, and other advanced features but your ride height presets will all be pressure based readings rather than height based.

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