[Andi]

The adjustment is quite easy and instantly familiar if you've ever adjusted a coilover spring perch. Just loosen the allen bolt (don't remove), rotate the perch to adjust up or down as illustrated in the owners manual high performance supplement to the desired position, and re-tighten the allen bolt. A lower front ride height will translate into less understeer / more oversteer and has the side effect of looking better as well (at least in my eyes).

Note: the car doesn't come with a spring perch adjustment tool. You can buy one or, in a pinch, you can use a pair of allen wrenches to get the right leverage to rotate the perches.

Hope this helps.