Speeduino UA4C (Sea Wolf) Assembled ECU


A compact generic wire in Speeduino ECU.
But one that is big on features.



The UA4C gets it’s name “Under Arduino 4 Channel”, as the Arduino Mega sits on top of the Speeduino PCB.
This combined with an all surface mount part design give all the functionality and more of the 0.4 Speeduino in a much slimmer package.

This item consists of: UA4C Speeduino PCB, Mega2560 board, Metal enclosure, Printed end plates with MAP fitting, USB cable, 2 plugs and 46 crimps.
The ECU will have the latest firmware loaded, a test base-map will also be on the unit.


  • 4 ignition channels (Low/Logic level)
  • 4 injector channels
  • 4 high current outputs
    • Idle
    • Idle 2
    • Boost
    • VVT
  • 8 low current outputs
    • Fuel pump
    • Tachometer
    • Fan
    • Fan 2
    • Aux 1-4
  • Stepper Idle Control with optional module
  • 5v Sensor supply


  • Throttle position sensor (TPS)
  • Coolant temperature sensor (CLT)
  • Air temperature sensor (IAT)
  • 2.5 BAR Manifold pressure sensor (MAP) [4 BAR upgrade available]
  • 2nd Internal MAP sensor for barometric compensation as standard
  • O2 sensor (narrowband or wideband)
  • Launch control (Clutch switch)
  • Knock (Due in future firmware update)
  • Flex fuel
  • 2 spare inputs
  • Hall Effect Crank/Cam (VR with optional internal module)

Case end plate design by SpeedyEFI.

Additional information

Add VR Conditioner + £18

No, Yes


There are no reviews yet.

Be the first to review “Speeduino UA4C (Sea Wolf) Assembled ECU”

Your e-mail address will not be published. Required fields are marked *