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8Link ECU Online ManualANTI-STATIC HANDLING GUIDELINESYour body builds up an electrical charge as you move around. This charge can reach very highvoltages. Whenever given the opportunity this energy will attempt to discharge (usually throughyour finger tips!). This can be fatal to most electronic components. Most people haveexperienced an electrostatic discharge when they step out of their car or touch a metal benchtop.1. The following guidelines describe precautions that can be taken to reduce the possibility ofdamaging your ECU:2. Work only on a conductive surface. A clean steel bench is suitable.3. Always wear a wrist strap that is electrically connected to the conductive working surface.4. Touch the working surface regularly.5. Do NOT touch components on the circuit board.6. Where possible, only handle the ECU by its plastic header.7. Do NOT carry the ECU around without anti-static packaging.8. Do NOT touch the bare terminals in the ECU header.Observing the above procedures will minimise the chance of damaging the ECU. Note thatfailure due to static damage often does not appear until well after it was caused.1.3.2Fitting the ECUInformation is provided to assist in fitting the ECU into the vehicle.1.3.2.1350ZLinkThe following steps outline the installation procedure for the Nissan 350Z plug-in ECU:1. Remove the kick panel on the passenger side of the vehicle. Remove the glove box or dash panel on thepassenger side of the vehicle, this is secured by a bolt with a 10mm head, one screw and clips.2. The factory ECU is mounted vertically with its wiring harness connectors facing down. Remove the factoryECU from the vehicle: Ensure the key is in the OFF position. Unplug the wiring harness from the factoryECU, use the lever on the connector to do this. Remove the three bolts (10mm socket) that retain theECU and remove the ECU from the vehicle. DO NOT touch the exposed pins in the factory ECUconnector.3. Remove the factory ECUs circuit board from its enclosure: Ensure you are following the given anti-staticguidelines and ARE WEARING A CONDUCTIVE WRIST STRAP connected to a conductive workingsurface. Remove the top cover and electronic board from the ECU baseplate by removing the four retainingscrews, very carefully and evenly pry the lid off using blade screwdrivers. The electronic board may comeaway with the lid. When removing the electronic board hold it only by the plastic header and place it insidethe lid.4. Fit the Link Plug-In ECU: Remove the ECU from its packaging and position it with the electronic boardfacing up, place the factory baseplate onto the ECU lid. Remove the tape securing the electronic board tothe lid. Secure the base-plate and lid together with the four cap screws supplied with the ECU. Place thefactory electronic board and lid in the packaging your Link ECU came in for its protection.5. Mount the Link 350Z plug-in ECU in the position of the factory ECU. 2020 Link Engine Management Ltd

G4X Plug-In ECU Installation Manual96. Install a vacuum line from the MAP port on the ECU to the intake manifold of the engine. The engine has aconvenient port for connection under the front plastic engine cover. 2020 Link Engine Management Ltd

10Link ECU Online Manual7. Connect the ECU to the factory wiring loom, use the lever on the connector to make sure the connector issecured into the ECU.8. Do NOT attempt to start the vehicle. Proceed to read through the remaining sections of this manual first.1.4Additional Sensors/FunctionsG4X Plug-In ECUs offer various options for the installation of additional sensors and devices. As a minimum itis recommended that all ECUs are installed with a Manifold Absolute Pressure (MAP) sensor and Intake AirTemperature (IAT) sensor. These parts can be purchased if required from your nearest Link dealer.1.4.1MAP SensorIt is important that the pressure source for a MAP sensor be taken from a stable pressure source after thethrottle body. It is common to 'T' into the fuel pressure regulators pressure signal. Do NOT share this signalwith other devices such as boost gauges or blow off valves.1.4.1.1350ZLinkThe G4X 350ZLink Plug-In ECU supports several options for fitting of a MAP sensor. Any one of the followingoptions can be used:1. Internal MAP Sensor – To ease installation the G4X 350ZLink ECU is fitted with an internal MAP sensor.This sensor is either rated to 4.0 Bar absolute pressure (3.0 bar boost) or 7.0 Bar absolute pressure (6.0bar boost) depending on the age of the bottom board. Which sensor is fitted can be ascertained bylooking at the sticker on the bottom board (should say 7 Bar for 7 Bar models and nothing for 4 Bar) or bylooking at the MAP value when at atmospheric pressure and changing the calibration setting. The internalMAP sensor is wired to An Volt 9.2. MAP Sensor Wired Through AFM – To avoid running additional wires into the engine bay, a MAP signalcan be brought in through the AFM signal wires. The AFM is wired to An Volt 3. Refer to factory wiringmanuals for AFM wiring connections. Make sure the AFM can not be reconnected.3. MAP Via Expansion Connector - The expansion connector provides power, ground, and analog channelsfor the connection of a MAP sensor. 2020 Link Engine Management Ltd

G4X Plug-In ECU Installation Manual11Make sure that the correct MAP sensor input has been selected in PCLink and a MAP calibration has beenperformed before attempting to start the vehicle.1.4.2IAT SensorIt is highly recommended that an IAT sensor be fitted in all applications to provide an input for correction offuel and ignition based on the engines air charge temperature.An IAT sensor should be fitted in the intake system in a location that accurately represents intaketemperature. The most common location is just prior to the throttle body. Installing in the manifold is notrecommended due to heat soak issues. A fast response sensor must be used in all forced inductionapplications.1.4.2.1350ZLinkThe G4X 350ZLink Plug-In ECU supports several options for fitting of an IAT sensor. Either of the followingoptions can be used:1. Factory Fitted IAT Sensor – 350Z models are factory fitted with an IAT sensor in the MAF. This sensor iswired to An Temp 2.2. IAT Through Expansion Connector - The expansion connector provides ground and a temperature channelfor the connection of an IAT sensor. Note spare An Volt channels can be used as temperature inputswhen a pullup resistor (to 5V) is added.As the factory IAT sensor is not located in the intake manifold it is recommended to fit an aftermarket IATsensor to the intake manifold and use the MAF IAT wiring or expansion connector to connect the sensor tothe ECU.1.4.3E-Throttle OutputIt is becoming more common to convert cable throttle vehicles to Electronic Throttle control, this sectionexplains how (if it is possible) to do this for each plugin.1.4.3.1350ZLinkThis vehicle has E-Throttle from factory and so does not require any modifications.The E-Throttle Output pins are Aux 9 & 10 and the EThrottle Relay is Aux Ignition 7. If the EThrottle is foundto be operating in the wrong direction this can be rectified by changing the Aux 9 Active State (ElectronicThrottle - E-Throttle 1 - E-Throttle Setup or by swapping the ve and -ve pins at the throttle plug.1.4.4Expansion ConnectorExpansion 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:· Do not overload the 5V Out pin. Although this is protected against ECU damage the 5V out signal alsoprovides power for other sensors.· Do not connect the ground pin to chassis ground. This could cause ground loops and introduceunnecessary interference. Use this pin only to ground external sensors that are isolated from chassisground.The Expansion connectors available for each ECU can be found under the Pinouts Section.1.5PC TuningG4X ECUs require PC/laptop tuning using the PCLink Tuning Software application running on a Windowsbased computer. PCLink may be downloaded from www.linkecu.com. Note that when new versions of PCLinkare released they are posted on the website and may be downloaded at no cost. Also note that G4X ECUsmust be used with the correct version of PCLink. 2020 Link Engine Management Ltd

12Link ECU Online ManualIMPORTANT!The G4X ECU has on board USB.BEFORE connecting the ECU to your laptop, the USB drivers must be installed.Failure to install the drivers on your laptop first may result in windows assigningincorrect drivers. These drivers will not work with the G4X ECU and are difficult touninstall. The correct USB drivers are installed as part of PCLink installation, asdescribed in the following section. Should internet download not be practical, acopy of the drivers on CD can be obtained from your nearest Link dealer.1.5.1Installing USB DriversBefore connecting the ECU to your laptop or PC, the ECU USB drivers must be installed. These drivers areinstalled as part of PCLink installation as described in the following section. Should internet download not bepractical, a copy of the drivers on CD can be obtained from your nearest Link Dealer.1.5.2Installing PCLink Tuning SoftwareDue to the frequent updates PCLink is no longer shipped with each ECU. You will be required to download thelatest version of PCLink from: linkecu.comShould access to an Internet connection be impractical, download the latest version of PCLink elsewhere to aUSB drive, and then install on your laptop.Installing from the web1. Go to the above website and navigate to the downloads and software updates section.2. Download the latest version of PCLink. When prompted to run or save the file, select save. It isrecommended to save this file on the desktop.3. Double click the saved file and follow on screen instructions.4. When prompted to install USB drivers, select yes. This may take some time.5. When installed, open PCLink by double clicking on the icon that has been placed on the desktop.1.5.3Communicating With Your ECUAfter PCLink installation, you will be able to connect the G4X ECU to the laptop to perform set-up and tuningwork.1. Connect the ECU to your laptop using a Link G4X ECU USB Cable. If not supplied with the ECU, thesecan be purchased from a Link dealer. No other adapter or cabling is required. Connect the cable to theconnector labelled USB.2. If this is the first time you have connected a G4X USB ECU to your laptop follow the driver installationinstructions that appear. When prompted if you want to install drivers select 'Continue Anyway'.3. Start PCLink by double clicking on the PCLink icon on the windows desktop.4. Switch the key to the ON position. This will provide power to the ECU.5. In PCLink, under the 'Options' menu, select 'Connection'. The connection options dialogue will open.Select the correct COM Port number from the drop down list or select auto for automatic com portdetection.6. PCLink offers both mouse and keyboard control. To establish a connection between the PC and ECUpress the F3 key. The same process can be used to disconnect. If a successful connection isestablished, PCLink will download settings from the ECU, otherwise you will be warned that an error hasoccurred.7. Make sure the connection shows “ONLINE” in the top right corner of PCLink.8. To permanently STORE any changes made to the ECU press F4. If this is not done before turning theECUs power off all changes made will be lost.1.6Pre-Start ConfigurationBefore starting the vehicle, important pre-start configurations need to be made.1.6.1Firmware VersionIt is recommended to ensure that the Link G4X ECU is running the most up to date firmware. Firmwareversion information can be obtained by connecting to the ECU with PCLink and selecting 'ECU Information'under the Help menu. 2020 Link Engine Management Ltd

G4X Plug-In ECU Installation Manual13The latest firmware can be downloaded from our website with PCLink.It is recommended that this is performed by an experienced Link dealer as new features may need to beproperly configured.The firmware can be updated by selecting 'Update Firmware' under the 'ECU Controls' menu in PCLink, followthe on screen instructions to complete the firmware update process.1.6.2Base ConfigurationAll G4X Plug-In ECUs are shipped with base configuration settings. Note that these are provided to reduceinitial setup and tuning times. They are NOT recommended tuning values. PCLink includes baseconfigurations for various models. Download the appropriate base configuration into your ECU with PCLink byconnecting to the ECU (described in the Connecting To PCLink section of this manual), then selecting 'Open'under the 'File' menu. Select the appropriate .pclx file and then select 'Open'. Downloading large configurationfiles can take up to a few minutes. Be patient and acknowledge any messages PCLink shows.1.6.3MAP Sensor CalibrationAt key on and engine not running the Manifold Absolute Pressure (MAP) Sensor should always match theBarometric Absolute Pressure (BAP) Sensor. As well as providing altitude correction, the BAP sensor alsoallows the MAP sensor to be calibrated prior to tuning.Link G4X ECUs use an on-board barometric sensor that is calibrated prior to dispatch. This ensures that allPCLink Tuning Software programs (pclx Files) give a consistent state of tune throughout the ECU range. Thisallows a pclx file to be transferred between G4X based ECUs giving an equivalent state of tune providing allfactors affecting volumetric efficiency are equal.Without the ability to calibrate all the available types of MAP Sensors to the BAP Sensor there would besignificant affects on the accuracy of the resulting tune, especially when tuning with Manifold Gauge Pressure(MGP) as a load index.To calibrate the MAP sensor:1. Connect a laptop/notebook PC to the ECU and connect to the ECU using PCLink.2. Under the Analog Channels menu, select the An Volt channel that has been wired to the MAP sensor.Select the correct MAP Sensor

microprocessor controlled Engine Management System. G4X software employs high resolution fuel and ignition tables with configurable load and RPM centres. When . the Link ECU, personal injury, or harm to property. 1.1.2 D isclamer . · 2003 to 2006 Nissan Skyline V35 · 2003 to 2006 Infinity G35