The Speeduino UA4C is an entry-level wire-in engine control unit (ECU) from Speeduino. It has 4 injector and 4 ignition outputs and support for up to 4 cylinders. 4 sellers list it from US$115 to US$332.
Prices checked . Specs from Speeduino's published data.
Key specs
DBW = drive-by-wire throttle channels · λ wideband = onboard wideband lambda (oxygen sensor) inputs · CAN = controller area network buses.
Features
- ✕Drive-by-wire
- ✕Onboard wideband
- ✕Knock control
- ✓Flex fuel
- ✕Traction control
- ✓Launch control
- ✓Boost control
- ✕Gearbox control
- ✕Onboard logging
- ✕Ethernet
- ✓USB
- ✕Built-in display
✓ published · ✕ not offered · ? not published. Some features, like traction control and launch control, mean different things by brand. See the glossary.
Details
- Highlights
- Pre-soldered SMD board on Arduino Mega, onboard MAP+baro, 46 I/O pins
- Software
- TunerStudio, free Lite (paid upgrade optional)
- Logging
- PC only
- Links
- Product page ↗
- Tuning
- Find a Speeduino tuner with a dyno
- Maker
- Speeduino: history, software and every model
Where to buy the UA4C
5 sellers found
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Prices as shown on each seller's site on , in their own currency, converted at 14 Oct 2026 rates. Shipping, import duty and tax vary. Check with the seller before you buy.
