The MaxxECU RACE H2O Plug-in STANDARD (Ford Focus RS/ST Mk2) is a professional plug-in engine control unit (ECU) from MaxxECU. It has 1 drive-by-wire throttle channel, 1 onboard wideband lambda input and knock control. List price is US$1,958. One seller lists it at US$1,876.
Prices checked . Specs from MaxxECU'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
- Fits: Ford Focus RS Mk2 2009-2011 (JZDA), Ford Focus RS500 Mk2 2010-2011 (JZDA), Ford Focus ST/ST225 Mk2 2005-2012 (HYDA), manual only. Kit includes the RACE H2O ECU, ME9.0 adapter harness, MAP fitting, USB cable, Bluetooth antenna and a quick guide; it uses the stock LSU 4.2 wideband. Focus ST: manual transmission only. Fits the Ford Focus only, not Volvo cars with the same T5 engine. The air mass meter (MAF) is removed; the built-in 400 kPa MAP sensor replaces it. Dash lights, tacho and clutch/speed signals run over the OEM CAN bus. OEM EGT sensors and fuel consumption output are not supported; 6 Type-K EGT inputs are in the harness. The store title says 2009-2010 and the harness is labelled 'Focus RS 2010'; MaxxECU's wiring manual lists ST models from 2005.
- Software
- MTune (free)
- Logging
- 8 MB onboard, up to 1000 Hz
- Links
- Product page ↗
- Fits
- Ford Focus RS / ST
- Tuning
- Find a MaxxECU tuner with a dyno
- Maker
- MaxxECU: history, software and every model
Where to buy the RACE H2O Plug-in STANDARD (Ford Focus RS/ST Mk2)
1 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.



