Tein EDFC Active GPS Kit This kit will allow you to use the automatic adjustment mode that reacts to your speed with the aid of the GPS Kit and chance the damping force of your TEIN coilovers appropriately.
EDFC ACTIVE makes it possible to adjust damping force with ease from the driver's seat, by controlling stepping motors installed on each shock absorber. Built-In G-Sensor allows G-actuated automatic adjustment of damping force while driving. Additional automatic speed-sensitive damping force adjustment feature is available with the use of optional "GPS kit" (sold separately).