uHu is pretty much on the money about how the trade-offs work.
The bottom line is that the AHC is good for maybe 608kg on top of unladen mass. If you exceed this additional load WHEN IT TRIES TO LEVEL THE VEHICLE - which is not all the time (e.g. not every time more load comes on the hitch from the trailer when off-roading) - just when it is sitting still for a while or when moving between L-N-H, then it will get overpressure in the AHC and go back to L mode.
With AHC you can't overload the vehicle - simple as that.
Now, if some of the weight is from bars and tanks and things and is usually on the vehicle, you can beef up the springs and torsion bars to help out and get some or all of that AHC carrying capacity back.
If you go from unladen to +608kg regularly then conventional suspension setup will be more predictable and remember trailer hitch load is not on the AHC dampers directly - the hitch is some distance back from the wheels giving more of a leverage effect for that load.
If one were also to adjust the height sensors one might want to look for uprated springs that were also longer (e.g. for appropriately high lifted vehicles), but as uHu mentioned travel of the AHC dampers can become an issue. To my knowledge no one makes longer AHC dampers or for that matter heavier dampers or stronger spheres. I have spoken with the guy in the UK about making them, but he was sceptical about the concept and thought there were too many other potential issues that would arise - it is an engineered system at present with a lot of complex moving parts and a computer we can't get inside of.
For wilsil, I think you should get your AHC pressures checked with an without your KK - not hard to do. Buy one of those Mini-VCI - needs an old WIndows XP laptop to work. Then you can decide whether inexpensive rear coils and/or ratcheting up your torsion bars might help. If you haven't done it, you should.
The bottom line is that the AHC is good for maybe 608kg on top of unladen mass. If you exceed this additional load WHEN IT TRIES TO LEVEL THE VEHICLE - which is not all the time (e.g. not every time more load comes on the hitch from the trailer when off-roading) - just when it is sitting still for a while or when moving between L-N-H, then it will get overpressure in the AHC and go back to L mode.
With AHC you can't overload the vehicle - simple as that.
Now, if some of the weight is from bars and tanks and things and is usually on the vehicle, you can beef up the springs and torsion bars to help out and get some or all of that AHC carrying capacity back.
If you go from unladen to +608kg regularly then conventional suspension setup will be more predictable and remember trailer hitch load is not on the AHC dampers directly - the hitch is some distance back from the wheels giving more of a leverage effect for that load.
If one were also to adjust the height sensors one might want to look for uprated springs that were also longer (e.g. for appropriately high lifted vehicles), but as uHu mentioned travel of the AHC dampers can become an issue. To my knowledge no one makes longer AHC dampers or for that matter heavier dampers or stronger spheres. I have spoken with the guy in the UK about making them, but he was sceptical about the concept and thought there were too many other potential issues that would arise - it is an engineered system at present with a lot of complex moving parts and a computer we can't get inside of.
For wilsil, I think you should get your AHC pressures checked with an without your KK - not hard to do. Buy one of those Mini-VCI - needs an old WIndows XP laptop to work. Then you can decide whether inexpensive rear coils and/or ratcheting up your torsion bars might help. If you haven't done it, you should.
