Link G4X Manual

Link G4X Manual

Subaru impreza wrx v11
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Subaru Impreza WRX V11

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Summary of Contents for Link G4X

  • Page 1 Subaru Impreza WRX V11...
  • Page 3 LIMITED LIFETIME WARRANTIES, and no others. Link Engine Management Ltd warrants only to the original purchaser of the ECU, for the lifetime of the ECU, (subject to the limitations set out below), that the ECU shall be free from defects of materials and workmanship in the manufacturing process.
  • Page 5: Table Of Contents

    ................................16 8 First Time Startup ........................... 16 9 Pinouts ........................... 18 WRXLink (11) ................................18 10 CAN Information ........................... 23 WRXLink (11) ................................23 11 Known Issues ........................... 24 WRXLink (11) ................................25 © 2024 Link Engine Management Ltd...
  • Page 6: Part I Plug-In Ecu Installation Manual

    All Link G4X ECUs are in-field upgradeable, there is no need to return the unit for firmware or software updates.
  • Page 7: Pre-Installation

    1.2.1.1 WRXLink (11) Link has two different plug-in ECU models to suit the WRX11, these are called WRX11 and WRX11USDM. WRX11 supported models: · 2007-2014 WRX and WRX STI with GR/GV/GH/GE chassis codes, for JDM/AUDM/SADM/EURO markets, with turbocharged EJ20 or EJ25 engines.
  • Page 8: Wrxlink (11)

    Subaru Impreza WRX V1-11 ECU The G4X Subaru V1-11 Plug-In ECUs are NOT designed to be used directly with low impedance injectors. All models this ECU is designed for are fitted with high impedance injectors from factory. This ECU has been designed to be used with HIGH impedance (greater than 6 Ohms) injectors.
  • Page 9: Fitting The Ecu

    3. Cut a rectangular hole in the back wall of the ECU case as per the picture below to allow the USB cable to pass through. Suggest also adding two small holes in the back wall to allow a cable tie to strain relieve the USB cable © 2024 Link Engine Management Ltd...
  • Page 10 USB Cable Hole 4. Fit the Link Plug-In ECU: Remove the ECU from its packaging, unplug the USB cable from the socket on the topboard and place ECU into the factory enclosure. Ensure the PCB is slotted into the slots inside the case.
  • Page 11: Additional Sensors/Functions

    1.4.1.1 WRXLink (04), WRXLink (07) & WRXLink (11) The Link G4X WRXLink (04), WRXLink (07) & WRXLink (11) plugins support several options for fitting of a MAP sensor, any one of the following options can be used: 1. Factory MAP Sensor – From factory, all models supported by this ECU are fitted with a factory MAP sensor.
  • Page 12: Iat Sensor

    Throttle -> E-Throttle 1 -> E-Throttle Setup or by swapping the +ve and -ve pins at the throttle plug. Expansion Connector Expansion connectors are provided to allow easy connection of additional ECU inputs. An “expansion cable” can be purchased from your Link dealer. Important points when wiring to the expansion connector: ·...
  • Page 13: Pc Tuning

    Communicating With Your ECU 1.6.3 After PCLink installation, you will be able to connect the Link ECU to the laptop to perform set-up and tuning work. 1. Connect the ECU to your laptop using the appropriate ECU USB Cable. If not supplied with the ECU, these can be purchased from a Link dealer.
  • Page 14: Firmware Version

    Link ECUs use an on-board barometric sensor that is calibrated prior to dispatch. This ensures that all PCLink tune files (.pclx Files for G4X or .pcl5 for G5) give a consistent state of tune throughout the ECU range. This allows a tune file to be transferred between G4X or G5 based ECUs giving an equivalent state of tune providing all factors affecting volumetric efficiency are equal.
  • Page 15: Tps Calibration

    Input and Output Setup 1.7.6 As the Link G4X & G5 Plug-In ECUs are often designed to run several models there are a few items that must be set-up to make the ECU specific to your model. The Pinouts section of this manual gives a list of the functions of each channel based on the target vehicle.
  • Page 16: Trigger Calibration

    Only after all pre-start checks have been made should an attempt be made to crank the engine. The following steps must be performed before an attempt is made to start the engine to ensure the Link ECU is calibrated to precisely measure engine position.
  • Page 17 To determine injector dead-time on a running engine, with the engine fully warmed and operating at stable air/fuel ratios (a very precise AFR meter is required – a narrow band O2 sensor will not suffice), electrical © 2024 Link Engine Management Ltd...
  • Page 18: Pinouts

    An Volt 2 TPS (Main) DI 7 AC Request (2007- 2011) +5V Out DI 4 Clutch Sw Trig 2 L/H Intake Cam Sensor CAN2 H Ground (Cam Sensor) Ignition 5 (Aux) Main Fan Relay © 2024 Link Engine Management Ltd...
  • Page 19 +14V Out R/H Exhaust AVCS Solenoid +5V Out (APS Ground Main) B22 +5V Out (APS Sub) Aux 5 Wastegate Solenoid An Volt 10 APS (Main) An Volt 11 Cruise Switches Aux 14 Purge Solenoid © 2024 Link Engine Management Ltd...
  • Page 20 Note: Ignition 8 (C19) has a pullup resistor and so can't be used for typical Ignition purposes. Note: Injector 8 isn't exposed and so staged injection is only possible with Group Secondaries. Note: AC Request comes in on CAN DI 5 (instead of DI 7) in 2015+ models. © 2024 Link Engine Management Ltd...
  • Page 21 Ignition Ground Ignition 4 Ignition Knock 1 Knock Sensor Aux 5 Wastegate Solenoid Ground +14V Out AVCS Solenoid Aux 14 Purge Solenoid +14V ECU Power Ground (Knock Shield) ELCM/Evap Valve Sec Air Pipe Pressure © 2024 Link Engine Management Ltd...
  • Page 22 Aux 11 CE Light Expansion An Volt 7 (Rear O2) functions on the main header. Starter Cut Relay Expansion An Volt 8 (MAF) Ignition 6 (Aux) AC Relay Expansion Ground (Signal) © 2024 Link Engine Management Ltd...
  • Page 23: 1.10 Can Information

    Estimated Torque value (from Torque Control function), Clutch Switch, Gear and Inst Fuel Consumption are used by this CAN Mode. The AC Clutch, CE Light and Cruise lights are controlled over CAN in some models and hard wired in others. © 2024 Link Engine Management Ltd...
  • Page 24: 1.11 Known Issues

    CAN Aux 1 CE Light 1.11 Known Issues All plug-in ECUs are fully tested on a range of relevant vehicles, although there are often variations that have not been tested. For this reason issues can arise. © 2024 Link Engine Management Ltd...
  • Page 25: Wrxlink (11)

    WARNING: Always download the latest Installation Manual from linkecu.com and check the latest status of known issues before installing the ECU. Please contact your nearest Link dealer when suspecting a compatibility issue. 1.11.1 WRXLink (11) Some key start models may have the security/immobilizer lamp remaining on on the dash after fitting an aftermarket ecu.

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