The spacer install is very straightforward. The limiting straps---not so much. You need to make the calibration with some form of tool. SDD, GAP, iland, etc. I am only familiar with the GAP procedure. Basically, using the app, measure as I outlined above. Using the arrows on the app, adjust the ride height until it matches the numbers I listed above. Do this for each wheel. When complete, the app saves to the BCM. Done.