The WRXLink V10 2007 (WRX107X) is Link Engine Management’s G4X plug-in ECU for the Subaru Impreza WRX and STI V10 (GD/GG chassis) with the EJ257 2.5L engine, factory e-throttle (DBW), and AVCS. The PCB fits inside the factory ECU enclosure.
Critical fitment check — WRX107X vs WRX104X: Identify which variant your car has by checking ECU header pins A1, A2, and A3:
– Pins A1–A3 are empty (no wires) = WRX107X (this product) — mainly MY2006–2007
– Pins A1–A3 have wires = WRX104X (SKU 224-4000, listed separately) — mainly MY2004–2006
Not compatible with: GR/GH/GE/GV hatchback (3rd gen WRX) — different product required.
Vehicle Fitment
| Vehicle | Chassis | Engine | Years | Notes |
|---|---|---|---|---|
| Subaru WRX / STI V10 | GD, GG | EJ257 2.5L | 2006–2007 | Pins A1-3 empty |
Manual transmission only. Pins A1-3 check required before ordering.
Key Specifications
| Property | Value |
|---|---|
| SKU | 225-4000 |
| Link model code | WRX107X |
| Onboard MAP sensor | No — external MAP recommended |
| AVCS cam control | Supported (single intake) |
| E-throttle | Supported (factory DBW retained) |
| Connector identification | Pins A1-3 must be empty |
| Transmission | Manual only |
| CAN buses | 2 |
| Base map | Included |
| Software | PCLink G4X (free) |
Recommended Accessories
- Link XS Expansion Loom — MAP sensor and additional I/O
- LinkECU CAN Lambda Controller — wideband lambda via CAN
Frequently Asked Questions
How do I distinguish the WRX107X from the WRX104X?
Check ECU header pins A1, A2, A3: empty pins (no wires) = WRX107X (this product); pins with wires = WRX104X. Some 2006 models use either ECU — the pin check is the only reliable method.
Is a base map included?
Yes. A startup base map for the EJ257 is pre-loaded. Professional dyno tuning is required before use.
Easy to install. Affordable. Reliable.
G4X PlugIn ECUs offer the latest in engine management technology, designed to easily maximize the potential from your car.
This ECU fits inside the factory OEM enclosure. Installation is a breeze, with no alteration of the factory wiring loom required for the models listed below.
- Please check your connector matches the header in the listed photo and check the notes in italic below before purchasing.
- This ECU works for manual transmissions only.
- Air temp sensor highly recommended.
- Most factory features are supported.
- Check the features tab for I/O expansion options
Suitable Applications:
- The WRX104X (listed separately) mostly covered the 2004-2006 range.
- The WRX107X mostly covers the 2007 model.
However, some 2006 models require the WRX107X
_The fastest and most reliable way to tell, is to check whether pins A1-3 are populated.
_If the pins have wires, you need the WRX104X, if there are no wires, you need the WRX107X
*Suits GD or GG chassis with electronic throttle. Not suitable for the GR/GH/GE/GV hatchback or 3rd generation WRX’s
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