jcwells
"Question How fast does the system change the car ride height?"

When mine was operating; automatically in about 10 seconds.

When manually operating Level Controller; up almost immediately, down within a few seconds. Goes up faster than down, but it's scary to be laying underneath when it's coming down.

Bob
PS "sidelined again" Sounds like mine. Fortunately, Today, I only had to redu vacuum lines and connectors to cure my fluctuating idle. I used the $2 per ft silicone stuff from the dealer. I wanted to be sure of a tight fit.