Tein EDFC Active Pro, Damping Force Controller Motor kit NOT included but is required, please purchase separately. EDFC Active Pro - Adjusts damping force instantly according to G-Force & Speed. 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). By using EDFC, most models also benefit from "finer" adjustment range, turning a 16 position shock absorber in to a 32 or 64 position. Active Pro Additional Features 4 wheel independent settings Vehicle speed input: Enables uninterrupted speed-sensitive adjustment even when/where GPS signal is not available. 2 additional inputs eg: switch input for drift settings, handbrake input for gymkhana etc. Normal Features: Manual mode: Up to 10 presets are available to store and quickly recall preferred settings, according to the changes in situation G Actuated Mode: Enables automatic adjustment according to the changes in G-force measured with built-in G-sensor. 2 separate modes available; G-Arrange Mode and G-Linear Mode. Speed Sensitive Mode: Enables altitude, gps coordinates, trip computer and clock with GPS sensor, which must be purchased separately. Wireless Control: EDFC ACTIVE features wireless control system for easy installation / wiring. Controller unit is connected wirelessly to motor driver units which control motors, eliminating the need for troublesome wiring such as putting cables through bulkheads and/or placing/anchoring cables inside the car. Triaxial Acceleration Sensor: You can install controller at any angle or direction. Colour Display: 4 default colours, white, green, amber & blue, along with fine tuneable custom colours. Resume Feature: The system remembers damping force settings even after ignition off. Display dimmer Volume control Self diagnosis: Wire breakage, short circuit etc Lock Function: settings can be locked Separate compression and rebound may be controlled using 2 EDFC controller kits, the EDFC Active can control up to 8 stepper motors individually.