The WRXLink V3-4 (WRX4X) is Link Engine Management’s G4X plug-in ECU for the Subaru Impreza WRX and STI V3 and V4 (GC8D/GC8E) with the EJ20 engine, including the rare 22B STI. No AVCS on these generations — no cam control features are usable. Factory MAP sensor is supported via An Volt 1 but limited to approximately 125 kPa (18 psi). An external MAP sensor and IAT sensor are strongly recommended.
Vehicle Fitment
| Vehicle |
Chassis |
Engine |
Years |
| Subaru WRX / STI V3 |
GC8D |
EJ20 |
09/1996–08/1997 |
| Subaru WRX / STI V4 |
GC8E |
EJ20 |
09/1997–08/1998 |
| Subaru Impreza 22B STI |
GC8 |
EJ20 |
1998 |
Manual transmission only.
Key Specifications
| Property |
Value |
| SKU |
227-4000 |
| Link model code |
WRX4X |
| Onboard MAP sensor |
No — factory MAP (~125 kPa); external recommended |
| AVCS cam control |
Not applicable |
| Transmission |
Manual only |
| CAN buses |
2 |
| Base map |
Included |
| Software |
PCLink G4X (free) |
Recommended Accessories
Frequently Asked Questions
Does this cover the 22B STI?
Yes. The WRXLink V3-4 (WRX4X) covers the GC8 22B STI which uses the same ECU platform.
Is a base map included?
Yes. A startup base map for the EJ20 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 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.
- This ECU will need a modification before E-Throttle is usable.
Suitable Applications:
- GC8D
- GC8E
- WRX and STI from 09/1996 to 08/1998
Backorder Products
These items aren't kept in stock but are available for purchase.
Sensor connectors and Deutsch DT/DTM/DTP connector kits sometimes are listed as Backorder items, but we stock seperate items, so it only takes to collect these for your shipment in kits.
These items are supplied on backorder. Delivery times depend on each manufacturer's production schedule and current demand, so the figures below are typical estimates under normal conditions — not guaranteed delivery dates. When demand is high, lead times can extend beyond the ranges shown.
For made-to-order items or products requiring special configuration, production begins only after your order is placed and paid. The binding delivery date is the one the manufacturer confirms once your order is scheduled; we pass it on as soon as we receive it and keep you updated on any change.
Typical lead times (normal demand):
- Bosch Motorsport ABS: 3–4 weeks
- Emtron: ~4 days
- AiM: 2–7 days
- Ecumaster: 1–2 days
- Link: up to 1 week
Please check the estimated delivery time on each product page, and get in touch if you need a current estimate before ordering.
Orders Processed by 14:00 GMT+3 (EET )Monday-Friday Ship The SAME DAY!
In-stock items only, excluding holidays.
Items that are in stock will be shipped within 24 to 48 hours. However, if you place your order before 14:00 GMT+3 (EET) and the items are available, they will usually be dispatched on the same day. If any items need to be drop-shipped from a supplier, we will ensure they are sent out as quickly as possible. If you have any questions or need special shipping arrangements, please feel free to contact us.
- We offer shipping via UPS and DHL. Economy or Express services.
- We ship to Europe and internationally from our stock.
- Remote location fee. Additional fee for non-standard remote destination location surcharge is 20 Eur per shipment. We will contact you in case of remote location.
- Confirmation e-mails are sent immediately after your package is shipped, complete with estimated delivery date and tracking information (trackable shipping methods only).
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