AHC sometimes stiff, sometimes soft

[GuazisMotos]

If the pressures, heights, bushings, globes, bleeding, etc are all ok, it might come down to the sensors.
The AHC ECU adjusts damping according to road conditions. Road condition is determined by the frequency and amplitude of changes in the signals from the height sensors. A worn sensor, or a loose or sticking sensor link arm, will give erratic signals from the height sensors.

Gotcha, could that be the reason why I find my rear adjusting itself while I'm parked sometimes?

 

[GTV]

Gotcha, could that be the reason why I find my rear adjusting itself while I'm parked sometimes?

The A in AHC is for Automatic. It self adjusts as needed. That’s normal behavior.

 

[NolaNomad]

Unless you are adding a LOT of weight do not use non AHC LC torsion bars or coils.
80 series front coils do not fit the rear of the 100 but the rear coils are interchangeable.
Kings coils are a good choice for 2" lift but will depend a lot on weight.

I'm picking up a pair of King KTRS-79 take offs this weekend for $200, I have a pair of LC torsion bars on the way ($200), and I found Slee LCA reinforcement brackets on ebay ($22) in hand. Will be doing the sensor lift next week

 

[GTV]

I'm picking up a pair of King KTRS-79 take offs this weekend for $200, I have a pair of LC torsion bars on the way ($200), and I found Slee LCA reinforcement brackets on ebay ($22) in hand. Will be doing the sensor lift next week