I just manually adjust them. The auto ride height units are kinda cool... I guess. I have an older air ride tech unit in one of my trucks. And I have the auto up function turned off. But I think they cost to much for what they do. The new air ride tech unit is like $1500 retail. The accu air is up there too, i think it comes with valves though. The dakota digital is $825-$950 retail, depending on options. And then a tank, compressor, pressure switch, lines, fittings, valves (except accuair I believe), bags, are all in addition too.
To me, its just to much $$$ to not have to push a couple switches. As well as an added complexity in an otherwise simple car. My car didnt leak, so if i didnt mess with the switches, it stayed. And it was easy enough to raise and lower. In the past, I mostly have used the auto ride height units from air ride tech because they were easy to install- no gauge lines in the car and the controller could be left loose, and tucked under the seat, and pulled out when needed.
And also, all these kits have digital readouts. Digital gauges are hard to read in a roadster. I just prefer gauges with needles, that I can just quickly glance at, and see if they are in the right range.