I purchased this a few years ago, installed it but ended up not really using it much. I just sold it and removed it prior to the sale. It takes about an hour and a half to install it. Installation instructions included. $1400 new (CETE Audi e-tron Air Suspension Lowering Module Package) It really does what it says! You just unplug the existing plugs behind each wheel and plug in this module and plug the original plug into the module. Then you connect two wires to the canbus in the rear driver's side back panel from the inside. Very easy! I will walk you through it if you need me to. I will only ship to the USA. Shipping included.