DIYAutoTune MS3Pro Ultimate ECU
The DIYAutoTune MS3Pro Ultimate is a mid-range wire-in engine control unit (ECU) from DIYAutoTune / AMP EFI. It has 12 injector and 8 ignition outputs, support for up to 12 cylinders and knock control. List price is US$1,499. 2 sellers list it from US$1,499 to US$2,099.
Prices checked . Specs from DIYAutoTune / AMP EFI'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
- 10 P&H injector outputs for low-Z, up to 12 saturated
- Software
- TunerStudio MS (free Lite, paid registration for full)
- Logging
- SD card, 64 ch @200Hz
- Links
- Product page ↗
- Tuning
- Find a MegaSquirt tuner with a dyno
- Maker
- DIYAutoTune / AMP EFI: history, software and every model
Where to buy the MS3Pro Ultimate
2 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.
