Review on AIR LIFT 25804 Air Shock Controller Kit: Precision Control for Optimal Suspension Performance by Mark Harris

I have a 2013 Duramax with 5000 bag air spring paired with this supercharger kit. An older compressor is shown. You get an updated model to match the more expensive compressor also sold on Amazon. The difference in price is because this compressor does not include an additional valve and wiring that maintains the minimum PSI bag. With this kit, the compressor will not turn on automatically when the pressure in the bags releases over time to add air. Wiring is easy, this kit only comes with 1 tee to connect to the gauge, so get a few more 1/4 tee fittings to tie the packs together. I would recommend installing a check valve after the compressor to prevent air from flowing back through the compressor over time. I find that I lose some pressure through the compressor over the course of a few hours as everything else seems to be holding air.