Subaru WRX (V5 & V6) Link G4
£630.00+VAT
£740.25 incl
Subaru WRX (V5 & V6) Link G4 plug-in Engine Management System.
G4 Plug-In Engine Management system for Subaru Impreza WRX V5 & V6 and STI (MY99 and MY00) and Forrester .
NOTE: This ECU is an IMPLANT and will fit INSIDE the factory ECU casing.
You will have to remove the manufacturers ECU from inside the casing and replace with this implant ECU. You will have to make a small hole in which to exit the programming cables.
The implant / plug-in ECUs are constructed from a core G4 ECU main board and are plugged into car specific sub-boards as seen from the photo above.
Click here for the full V5/6 G4 manual in PDF format.
Software is free to download and firmware is user upgradable to ensure you will always get the latest enhancements.
Plug-In G4 ECU Specifications.
(Application dependent variations apply)
- fits within the original factory enclosure
- eight injection outputs
- four ignition outputs
- six analog inputs
- three temperature inputs
- six digital inputs
- eight auxiliary outputs
- up to two analog inputs
- up to two temperature inputs
- up to two digital inputs
- one "factory" header plug
- Can run on existing MAF sensor or any external MAP sensor you provide.
- Variable CAM, VVTi, VANOS, VCT, Vtec feedback control
- boost controller built in
- NOS controller built in
To use some functions you may have to use the XS (excess) connectors. This is becasue the OEM ECU plug may not provide a path out of the ECU for these functions.
You can assign up to 12 x 3D maps to any auxillary channel
You can assign your own axis'
i.e. both X and Y axis are completely controllable / configurable by the tuner. You are no longer locked to what the manufacturer provides.
1 map SHALL ALWAYS be defined as the base volumetric efficiency map for fuel and 1 map SHALL ALWAYS be defined as the base volumetric efficiency map for ignition.

