Link ECU G4X AtomX Standalone

Link ECU G4X AtomX Standalone

Link Engine Management

  • $999

Small, but mighty!

 The Link G4X AtomX ECU is the latest version of our entry-level ECU. Don't let its size fool you however, the AtomX has expanded data logging and uses the same microcontroller as the entire G4X range! It is more responsive and has higher bandwidth that its G4+ Atom II predecessor.

G4X features 512 megabytes of logging at 32bit using up to 250 channels, each limited to up to 1kHz per channel (by the Operating System), with a maximum of 100kHz.

G4X features 8 x faster communications speed, allowing you to download logs 8 x faster and pushes all the logging quickly up to a new and improved PCLink – available for download below in the features tab.

The AtomX can control up to 2 rotors or 4 cylinders with sequential injection and direct spark. This makes it ideal for naturally aspirated engines that just need a re-tune and don't need all the extra sensors and features that come with our higher level ECUs.

Requires "A" loom.

Engine Configurations

    1-12 Cylinder Distributed
    2-8 Cylinder Wasted Spark
    1-4 Cylinder Direct Spark
    Odd Fire Engines
    2-Stroke Engines
    Configurable Firing Order
    Configurable TDC Points (for odd fire)

Fueling Adjustments

    Up to 440 Zone Fuel Table with configurable load and RPM centers. Configurable X and Y Axis Parameters
    Multiple Fuel Tables
    Up to 6D Fuel Mapping (3D Fuel Table + #x3D Overlay trim tables
    Injection Rate Control for Group Injection Modes
    Master Enrichment for Traditional Fuel tuning
    Pre-Crank Prime
    First Crank Prime
    Crank Enrichment
    Post Start Enrichment
    Warm Up Enrichment
    Acceleration Enrichment
    IAT Fuel Correction
    Injector Deadtime Compensation
    Injector Short Pulse Width Compensation
    Injector Timing Control with Beginning / End Injection Definable
    AFR Table Correction
    Closed Loop Lambda
    Individual Cylinder Fuel Trims
    Overrun Fuel Cut
    Idle Load Trims
    Fuel Temperature Correction

Ignition Adjustments

    Up to 440 Zone Ignition Table with configurable load and RPM centers. Configurable X and Y Axis Parameters
    Maximum Advance
    Spark Duration
    Dwell Time Table. Configurable X and Y Axis Parameters
    Multiple Ignition Tables
    Up to 6D Ignition Mapping (3D Ignition Table + 3x3D Overlay Trim Tables)
    Individual Cylinder Ignition Trim
    IAT Trim
    Voltage Correction
    ECT Trim
    OEM Compatibility
    CDI Compatibility


    Engine Temperature Dependent Progressive Limiting
    Vehicle Speed Limit
    System Voltage Limit
    User Configurable RPM Limits based on external input


    Digital Trigger Decoding
    Reluctor, Optical Proximity or Hall Sensors
    Programmable filtering and arming thresholds
    Configurable trigger patterns or preset triggering options.
    Supports nearly all OEM trigger patterns and custom trigger arrangements

Motor-Sport Features

    Gear Shift Control (by digital inputs only)
    Use the G4X Storm for more Motorsport Features


    via mini USB

Auxiliary Output Options

    Each Output independently configurable
    Unused ignition and Fuel outputs available as auxiliary outputs
    General Purpose Outputs
    General Purpose PWM Outputs
    Fuel Pump Control
    Fuel Pump Speed Control
    Engine Fan Control
    Air Con Clutch Control
    Air Con Fan Control
    Intercooler Spray Control
    Tacho Control
    Speedo Control
    Check Engine Light
    Purge Solenoid
    Oxygen Sensor Heater
    Switched Cam Solenoid Control
    ECU Hold Power Control
    Shift Light Control
    Starter Control


    150 MHz Specialised Engine Management Microprocessor
    Ignition control to 0.1 degree, fuel to 0.01 ms
    32 Bit Floating Point Calculation
    12 Bit ADC Resolution
    20000+ RPM
    4Gb Non Volatile Flash


    4 High Current Injector Drives (suits high impedance injectors)
    4 Ignition Channels
    4 Auxiliary Outputs
    2 Digital Inputs
    +5V Out
    2 Temperature Inputs
    3 0-5V Analog Inputs
    2 Trigger Inputs (Reluctor, Optical or Hall Sensors)
    On Board Baro Correction (Real Time)

Analog Inputs

    Each channel independently configurable with preset or custom calibrations
    Wide-band O2 (from external controller e.g. Innovate LC1)
    Boost Adjust Signal
    Configurable Fault Detection Settings
    Throttle Position
    Pressure (External MAP, BAP, general purpose, fuel, oil)
    On Board Barometric Pressure Sensor
    Air Flow Meter
    Temperature (coolant, IAT, general purpose)
    Gear Detection through Analog input, CAN or RPM/Speed Calculation

Digital Inputs

    Each channel independently configurable with pull-up resistors and active state control
    All digital inputs capable of reading frequencies of up to 10kHz
    Duty Cycle measuring on all digital inputs
    Turbo speed
    Ethanol Sensor Control
    Wheel Speed Detection on all digital inputs with additional general purposed speed inputs
    Anti-Theft control through digital inputs, over CAN or both

Programmable Math Processing

    Eight individually controllable math channels with up to four parameters in each
    Math channels can be used as table axis’s and as digital or analog inputs

Boost Control

    Engine Temp Correction
    IAT Correction
    Multiple Boost Tables
    External Adjustment
    Open and Closed Loop Options

Idle Control

    Solenoid Control Only
    Reliable and accurate user configurable Closed Loop Control
    Air Con, Engine Fan, Power Steer, Drive Idle Ups
    Idle Ignition Control


    Internal Temperature Range -10 - 85oC
    Ambient Temperature Range -30 - 90oC
    Voltage 8 - 22V
    Operating Current 200mA
    Electrical protection on all inputs and outputs
    Onboard Barometric Pressure Sensor


    Length: 79 mm
    Width: 126 mm
    Height: 42 mm
    Weight: 360 grams
    Connector : 26 Pin Waterproof Automotive


    Adjust ALL parameters in real time
    Mouse or keyboard operation
    QuickTune - automated fuel self tuning
    Logging Analysis
    Diagnostic Information
    Built In Help
    Definable Screen Layouts
    View over 300 possible runtime parameters

Package Contents

    G4X AtomX ECU
    Mounting Bracket
    Wiring and Installation Instructions
    2 large Link Stickers
    2 small Link Stickers

Manufacturing Standard

    ISO 13485

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