For those Australian's among us there is a company called LLAMS that is making modules to override the QL air suspension (they make one for disco 4 also). Specs are as follows :
The air suspension works as normal when the LLAMS switch is off - no LED.
With the switch turned up (red LED), all heights are raised.
NRH + LLAMS = NRH + 50 mm
This is the same as OR 1 + 15 mm and works at any speed.
OR 1 + LLAMS = OR 1 + 40 mm
This is the same as OR2 +10 mm and works up to the OR 1 speed limit.
If you use LLAMS at OR2 you will run out of gas and cause an air suspension error message on the screen, but it will give you more height on the rear to get out of trouble. You turn the engine off and back on to clear the error. It will also cause the pump to overheat! EMERGENCY ONLY!!!!!
LLAMS also works to reduce heights. If you turn LLAMS to minus (green LED) at Aero it will drop the car around 20 mm. The same with NRH minus LLAMS, so you get effectively Aero at any speed as it is not speed limited on NRH.
The main advantage is that NRH plus LLAMS will give you a 50 mm lift at any speed which is great for touring on fast gravel or sandy roads.
Should be available July 2014, pretty sure they ship internationally as well if any yanks are interested.