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Link G4X Xtreme X Stand Alone ECU

Link G4X Xtreme X Stand Alone ECU

SKU: LINK-109-4000
Regular price $1,750.00
Regular price Sale price $1,750.00
Sale Sold out

The XtremeX is one of Link’s premium ECU’s with more inputs, outputs and features.

The XtremeX has built in E-throttle and all the advanced features including Anti-lag, Cruise Control and Traction Control.

With 8 Injector drives and 8 ignition drives the XtremeX can control up to 4 rotors or 8 cylinders with sequential injection and direct spark. The XtremeX is a great choice for professional level motorsport or more demanding road car applications.

Please note: for peak & hold please contact a Link ECU Sales Person to purchase a G4+ Xtreme ECU.

Requires "A" & "B" Looms for installation.


  • 8/10* x Digital inputs
  • 4 x Temperature inputs
  • 11 x Analog inputs
  • 2 x Trigger inputs
  • 2 x Knock inputs
  • *2 inputs required when using 2nd CAN Bus


  • 8 x injection drives
  • 8 x Ignition drivers
  • 10 x Auxiliary outputs^
  • +5V Sensor power supply
  • +8V Sensor power supply
  • ^unused fuel and ignition drives can be used as additional Aux outputs


  • 2* x CAN bus
  • 1x Serial (RS232) connection
  • 1x USB tuning connection
  • Faster communications than G4+ models
  • 512 Megabytes Data Logging


  • Dimensions: 185mm(L) x 130mm(W) x 40mm(H) (without looms)
  • Mass: 680grams

Advanced features not found on the Storm:


  • Fully programmable E-throttle control complete with capability of gear shift throttle blip and antilag.
  • Cruise control.
  • Two independent CAN modules.
  • 30 general purpose tables (up from 20)

All Motorsport features including full gear shift control, cruise control, traction control, antilag and launch control.

Advanced closed loop lambda strategy and dual bank lambda control.

What's in the box? 

  • Supplied with USB tuning cable and mounting bracket.
  • *Requires “A” & “B” looms or “A” & “B” connector kits, sold separately.

Engine Configurations 

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


  • 8 x High Current Injector Drives (suits high impedance injectors)
  • 8 x Ignition Channels
  • 8 x Auxiliary Outputs (All PWM capable). Aux5-8 can control Stepper Motors and drive High or Low
  • 8/10* x Digital Inputs (all capable of reading frequencies up to 10kHz). *2 inputs required when using 2nd CAN Bus.
  • +5V Out
  • +8V Out
  • 4 Temperature Inputs (Configurable pull-ups on ANT1&2)
  • 11 x 0-5V Analogue Inputs
  • 2 x Trigger Inputs (Reluctor, Optical or Hall Sensors)
  • On Board Baro
  • 3 Axis Accelerometer
  • Fueling adjustments

Traditional, Modelled and Modelled Multi-Fuel Equations

Single-Point Group, Multi-Point Group, Sequential, Semi-Sequential, Group Staged, Sequential Staged and Sequential/Multi Point Group Staged injection modes

Asynchronous injection (can add more fuel after initial injection if conditions change)

Quick tune (automated fuel tuning)

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 + 3x3D 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, Middle or End Injection Definable

AFR Table Correction

Dual Closed Loop Lambda

Individual Cylinder Fuel Trims

Overrun Fuel Cut

Idle Load Trims

Fuel Temperature Correction

Barometric pressure compensation

Injector test function

Ignition Adjustments


Distributor, Twin Distributor, Wasted Spark, Direct Spark, Rotary leading Wasted and Rotary

Leading Direct Ignition Modes

Up to 440 Zone Ignition Table with configurable load and RPM centers. Configurable X and Y Axis Parameters

Configurable Maximum Advance

Configurable Spark Duration

Configurable Spark Edge

Dwell Time Table with 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

Transient ignition retard

Adjustable ignition delay compensation

Ignition test function

Idle ignition control



Engine Temperature Dependent Progressive Limiting

Dual Vehicle Speed Limits

System Voltage Limit

User Configurable RPM Limits based on external input

MAP Limit with dual tables

Optional hard cut

Progressive cut control

Selectable fuel or ignition limiting

Ignition trim and configurable trim decay

Adjustable control range

Selectable cut effect (adaptive or constant)

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

VVT Cam Solenoid

Boost Control Solenoid

Test functions for each output

Closed loop Stepper Control & Rotary Oil Pump Control

Idle Speed Soloenoid

Idle Speed Stepper

Internal Ethrottle Controller

External EThrottle

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-purpose speed inputs

Anti-Theft control through digital inputs, over CAN or both

General Purpose switches, speeds, rpms and frequencies

large variety of input types

Analog Inputs


Each input independently configurable with preset or custom calibrations and configurable fault conditions

Built in 3 axis accelerometer

Built in Barometric Pressure Sensor

Large variety of Analog input functions

General Purpose Temperatures, Pressures, Rotary Switches and more

Analog Inputs can also be used as Digital Inputs

Large number of built in calibrations

Ten Calibration Tables and 3 Linear Calibrations for when a custom calibration is required



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

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

Motor-Sport Features


Anti Lag

Launch control

Gear Shift Control (Digital Inputs, Gear Lever Force or Gear Barrel Position)

Traction control

Anti-Lag System


Dual 3D Fuel enrichment, Ignition cut and Ignition retard Tables

Optional Cyclic idle (normal and cool-down)

Optional 3D Idle controller Override Tables (one for Antilag and one for Cyclic Idle)

Lockout condiitons based on engine speed and throttle position with hysteresis

Launch Control


Single RPM, 3D RPM Table or Latched (RPM when button pressed) Launch modes

Progressive cut control

Selectable fuel or ignition limiting

Selectable cut effect (adaptive or constant)

Adjustable control range

Vehicle speed controlled

Ignition Trim with optional 3D table and relative or absolute ignition angle options

Optional 3D Fuel Trim table

Gear Shift Control


Digital input (clutch switch), gear lever force (sequential gearbox), gear lever force (H pattern gearbox), and gear barrel position sensor input options

Timed or controlled modes

Adjustable progressive cut levels

Power re-introduction control

Ignition retard control

Fuel enrichment control

Cut duration based on gear

Traction Control


Disable switch

Various Lockout conditions

Multiple 3D slip Threshold tables

Traction Control - controlled tyre slip to improve vehicle safety and driveability

Uses an advanced Torque Management system to reduce engine torque

Idle Control


Solenoid, Stepper or EThrottle Control

Open or Closed loop actuator control and Closed loop Ignition control available

Large variety of position offsets for open loop and additional target offsets for closed loop actuator control

Specific start-up offsets and hold times

Dashpot functionality to smooth re-entry into idle and prevent undershoot

Electronic Throttle Control


Has an internal EThrottle Controller and supports external controllers

Multiple 3D target tables

Boost Control


Open or Closed Loop Boost Control

Multiple Target and Base Position Tables

Multiple Trim tables

Boost by Gear control

Knock Control


2 Built in Knock inputs

Fuel Enrichment and Ignition Retard functionality

Adjustable frequency filter

Adjustable gain (per cylinder)

Individual cylinder detection

Individual cylinder ignition retard and fuel enrich

Adjustable detection angle (start/end)

Noise threshold table (3D)

Adjustable ignition retard and fuel enrich sensitivity

Configurable ignition reintroduction and fuel enrich decay

Variable Valve Timing Control


Up to 4 cams independent control

Supports many OEM applications

Closed loop control

Multiple 3D Cam angle target tables

Optional advanced PID control settings for advanced tuners

Automatic function for calibrating cam angles

Chassis and Body


AC Control - Basic and Advanced modes available

AntiTheft - Via Digital Input, CAN or both

Speed based cruise control (EThrottle only)

Gear Detection - CAN, RPM/Speed or Analog Position Sensor

Individual wheel speed sources with the ability to specify Driving and Non-Driving wheel speed sources

Starter control - Multiple options available from very basic to Touch to start.

Torque Management




512 Megabytes of Datalogging

Up to 250 ECU Logging channels

Up to 1kHz per channel with a maximum total sample rate of 100kSamples/s when using ECU Logging

Unlimited channels when using PCLink logging



Tuning Port USB on board

Two CAN buses

Custom CAN configuration allowing tuners and end users to add support for new CAN devices



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



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

Packaging Contents


G4X XtremeX ECU

Wiring and Installation Instructions

2 large Link Stickers

2 small Link Stickers

Manufacturing Standard – ISO 13485


Additional Accessories (purchased separately)


Intake Air Temperature Sensor

3/8 NPT (Aluminium or Steel Mounting Bosses to suit)

3 Channel Link Igniter

Throttle Position Sensor

3 Channel Link Igniter

Wideband O2 Controller & Sensor

Injector Ballast Resistor Packs

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