USDM WRXLink V11 (USDM WRX11X)

Description

The USDM WRX11X fits inside the factory enclosure and replaces the OEM ECU of North American market WRX STIs, with no alteration to the wiring loom. Due to the amount of variation on this vehicle, please read the Configuration Memo text in PC Link carefully.

Supported factory features: DCCD, SI-Drive (can be set up to adjust anything you like in the ECU), MFD display with trip computer and gear display, ABS, stability control and all factory safety functionality, hill start assist, brake pressure, all four wheel speeds, rear demister, handbrake, Trac mode, diff mode, steering wheel position and other CAN data usable for logging or other strategies. All other dash gauges and warning lamps work as per factory; the CE lamp can be used for other functions such as a shift light or knock warning.

G4X Plug-In ECUs replace the factory ECU and fit inside the original enclosure, with no alteration to the vehicle wiring loom. All the features of a Link G4X wire-in ECU, with a direct-fit installation.

Important notes

• Before purchasing, check that your factory ECU connector matches the header shown in the photos.
• Manual transmission only.
• An intake air temperature (IAT) sensor is highly recommended.
• 4-pin powered CAN connector: use the CANJST4 cable (Link PN 101-0198) to connect CAN devices. The old CANPCB cable is not compatible. The port also provides a protected 12 V supply with a 3 A self-resetting fuse.

Compatible applications

• 2011–2014 WRX STI hatch or sedan, GR/GV chassis code, manual transmission only (2010 and earlier models used a different pinout which is supported by the WRX11X)
• 2015–2021 WRX STI VA chassis code, must have EJ series engine, manual transmission only (FA20 engine not supported)

Check Link's supported models list or write to us before ordering to verify your car.

G4X key features (where applicable)

• Up to 6D fuel and ignition mapping
• Precision closed loop cam control (four cam, independent control)
• Sequential fuel delivery
• Digital triggering, all OEM patterns
• OEM idle hardware supported
• 5D boost control with three switchable tables
• Motorsport features: antilag, launch, flat shift
• Continuous barometric correction (on board)
• CAN port
• QuickTune automated fuel tuning
• Individual cylinder correction
• USB tuning cable included
• Stats recording into on-board memory
• Gear compensations for spark, boost and fuel
• Real time selectable dual fuel, ignition and boost maps
• Sync and crank sensors can be a combination of Hall effect, variable reluctance or optical
• Boost control referenced to gear, speed or throttle position
• 512 MB data logging memory
• Staged injection
• Knock control with windowing

I/O expansion

Inputs and outputs available on the expansion connectors, as per Link documentation.

Expansion Connector 1

Pin 1	Ground
Pin 2	+5v
Pin 3	An Temp 4
Pin 4	An Temp 3
Pin 5	An Volt 4
Pin 6	An Volt 5
Pin 7	An Volt 6
Pin 8	An Volt 7

Expansion Connector 2

Pin 1	Ground
Pin 2	+5V
Pin 3	Knock 2
Pin 4	DI11
Pin 5	Injector 5
Pin 6	Injector 6
Pin 7	Injector 7
Pin 8	Injector 8