Link WRX4X (Subaru WRX & STI V3-4) ECU
The Link WRX4X (Subaru WRX & STI V3-4) is a mid-range plug-in engine control unit (ECU) from Link ECU. It has 6 injector and 6 ignition outputs and knock control. List price is US$1,525. 2 sellers list it from US$1,276 to US$1,525.
Prices checked . Specs from Link ECU'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: Subaru WRX Version 3, GC8D with EJ20 engine from 1996-1997., Subaru WRX Version 4, GC8E with EJ20 engine from 1997-1998. Designed for manual transmission vehicles. If you have an automatic model, please contact your local Link ECU reseller to discuss Direct Automatic Transmission Control compatibility. Air temp sensor highly recommended. Most factory features are supported. This ECU will need a modification before E-Throttle is usable.
- Part number
- 227-4000
- Software
- PCLink (free)
- Logging
- 512MB onboard
- Links
- Product page ↗Price source ↗
- Fits
- Subaru Impreza WRX / STI
- Tuning
- Find a Link ECU tuner with a dyno
- Maker
- Link ECU: history, software and every model
Where to buy the WRX4X (Subaru WRX & STI V3-4)
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.
