Link WRXLink (04) - WRX104X - 224-4000

Link WRX104X Plug-In ECU (Subaru WRX & STI V10, 2004-06) - 224-4000

The WRX104X is a G4X plug-in ECU for the 2004-2006 Version 10 WRX with the EJ25. It mounts in the factory ECU location on the original mounts, loom and connectors with no rewiring or adapter looms, keeps the factory functions and includes a startup map. Drive-by-wire (e-throttle) control is built in.

It runs Link's G4X platform and PCLink software, including flex fuel, boost and VVT control, closed-loop lambda, 512 MB logging and the G4X motorsport functions.

Suits: Subaru WRX Version 10, GD/GG, EJ25, 2004-2006. Manual transmission only.

Includes: G4X WRX104X plug-in ECU, anti-static strap, USB tuning cable, Link stickers, plug-in manual card, product registration card.

Specifications

• Communications: 2 x CAN bus; LTW 6-pin USB tuning connection
• Onboard logging: 512 MB
• Built-in e-throttle (drive-by-wire)
• Operating voltage: 6.5-24 V; maximum input voltage 36 V; maximum continuous current draw 8.5 A
• Dimensions: 190 x 160 x 30 mm (7.48 x 6.30 x 1.18 in)
• Weight: 260 g (9.17 oz)
• Inputs/outputs: see the WRX104X installation manual

Notes

• Check pins A1-A3 on the factory ECU connector: if they have wires you need the WRX104X (224-4000); if they are empty you need the WRX107X (225-4000). 2007 and some late-2006 cars use the WRX107X.
• Check that your connector matches the header shown in the photos before ordering.
• Most factory features are supported. Not for use where it would interfere with a vehicle's safety or emission control features. Link recommends installation and setup by an official Link dealer.

You may also need

For 2007 and some late-2006 cars, see the WRX107X Plug-In ECU (225-4000).

Downloads

• WRX10X User Manual (PDF)
• G4X Plug-In ECU Specifications (PDF)