The UK's official Speeduino distributor

£240.00 exVAT⠀⠀£288.00 incVAT

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

20 in stock

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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, End plates with MAP fitting, 2 plugs and 46 crimps.
The ECU will have the latest firmware loaded, a test base-map will also be on the unit.

This is the new version of the UA4C vB3 Sea Fox, improvements over earlier Sea Wolf  models include

  • Rearranging the serial headers for better fitment in the slim case
  • Upgrading the low current outputs, they now support larger loads and are self-protecting
  • Changed tachometer circuit to allow 5V, 12V, and high voltage tachometers
  • Added indicator LED for 5V power, and improved labeling


  • 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)
  • 4 BAR Manifold pressure sensor (MAP)
  • 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)

Additional information

Add VR Conditioner + £18

No, Yes

1 review for Speeduino UA4C (Sea Fox) Assembled ECU

  1. Federico Loffredi (verified owner)

    The inside board is absolutly stunning, it looks like professional stuff, it has nothing to do with v 0.3 saw on internet!
    I’ve been able to upload the speeduino system on it, and connect my new ECU to Tuner Studio for mad mods!

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