on-the-fly flip of the switch for on-ramps and twisties. My issues were when I wanted a lower stance. The combo of stock shocks and Eibach springs are just not a good pairing IMHO. The soft setting is fine but you flip the switch to sport and its a bone-jarring ride. I couldnt handle it for more than 30 seconds at a time. I have recently swapped to the KYB/Eibach setup and am happy I did.