Here's the list of common combinations:
If car already has ECU capable of paddle shift (most modern ECUs like DTA, MoTeC etc) and electronic throttle (drive-by-wire), you don’t need the GCU and you can take the actuator with integrated valves, so it’s:
Air Compressor + air bottle with all accessories
2 Steering wheel paddles or a WRC paddle
If car already has ECU capable of paddle shift (most modern ECUs) and mechanical throttle cable throttle, you don’t need the GCU, but you need valve block and blip actuator:
Air Compressor + air bottle with all accessories
2 Steering wheel paddles or a WRC paddle
Gearbox actuator (without integrated valves)
3 Way Valve block
Downshift Standard Throttle Blip Actuator or Inline, cable pull-type.
If car doesn't have ECU capable of paddle shift, but has electronic throttle (drive by wire), we can supply gear control unit + gear actuator with integrated valves:
Air Compressor + air bottle with all accessories
2 Steering wheel paddles or a WRC paddle
Gear Control Unit (GCU) with or without wiring
Gearbox actuator (with integrated valves)
2 Steering wheel paddles or a WRC paddle
If car doesn't have ECU capable of paddle shift, we can supply a standard gear actuator (valves not integrated) + gear control unit + valve block + mechanical cable throttle:
Air Compressor + air bottle with all accessories
Gear Control Unit (GCU) with or without wiring
3 Way Valve block
2 Steering wheel paddles or a WRC paddle
Downshift Standard Throttle Blip Actuator or Inline, cable pull-type.