Link G4X Plug-In ECU - Subaru Impreza WRX STI V10 EJ20 EJ25 | WRX107X
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The Link G4X PlugIn ECU transforms your WRX into a precision-tuned performance machine. Enjoy the latest in engine management technology, fitted directly into your OEM enclosure with no loom modifications required.
Choose the Right Model – Pin Check Required!
The fastest and most reliable way to determine which ECU you need is to check pins A1–A3 on the OEM connector:
- If pins A1–A3 have wires → You need the WRX104X.
- If pins A1–A3 are empty → You need the WRX107X (this listing, 225-4000)
Some late 2006 cars require the WRX107X, so this check is essential.
Vehicle Compatibility
- Designed for WRX V10 EJ25 (2.5L) 2004–2007
- Manual transmission only
- Suits GD/GG chassis with electronic throttle
- Not suitable for GR/GH/GE/GV hatchback or 3rd generation WRX
Model breakdown:
WRX104X → Mostly covers 2004–2006
WRX107X → Covers 2007 and some late 2006
Why Choose Link G4X?
- Factory fit, motorsport power – fits inside the OEM case, yet offers world-class tuning flexibility.
- Plug & play install – no wiring loom alterations for supported models.
- Confidence & reliability – trusted by tuners worldwide.
- Full feature set – advanced boost control, antilag, launch, knock protection & more.
Specifications
Click here to download the full Specifications PDF.
Documentation & Guides
Official Link Engine Management resources for this product:
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