LINK G4+ Thunder

SKU 124-1000 Category Tags , ,


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The Thunder is our biggest, most advanced ECU yet.

The Thunder is designed for high end applications requiring maximum performance, flexibility and tuning control. The Thunder has more inputs, more outputs and more features than any other Link ECU.

The Thunder has all the features found on other LinkECU’s plus onboard 3 axis accelerometer, two EGT thermocouple inputs, two Onboard Lambda Controllers and 2 x E-throttle Controllers.

If it is Direct Injection you are after, consider the Force GDI.

Download Thunder Quickstart guide 



16 x Digital inputs (6 are high speed differential type for ABS sensors etc)

4 x Temperature inputs

16 x Analog inputs

2 x Trigger inputs

2 x Knock inputs

2 x LSU 4.9 Wideband lambda sensor inputs

2 x K Type Thermocouple inputs



8 x Peak and Hold injection drives

8 x Ignition drivers

18 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


Advanced features not found on the Xtreme or Fury:

2 x Onboard digital wideband lambda controllers, no separate box required. Higher accuracy, simple setup and long sensor life are some of the advantages compared to a separate analog input wideband device.

2 x Fully programmable E-throttle controls complete with capability of gear shift throttle blip and antilag (for engines with 2 electronic throttle bodies).

2 x K type thermocouple EGT inputs – direct connection of EGT sensors with no extra interface box.


Dimensions: 180mm(L) x 210mm(W) x 40mm(H) (without looms)

Mass: 1060 gram

Watch a short video introducing the G4+ Thunder on YouTube here.

Other WireIn ECUs:

  • Xtreme
  • Fury
  • Storm
  • Atom

Advanced fully configurable WireIn Engine Control Unit (ECU)

  • Most suitable for high end applications where multi electronic throttle bodies are used or where a large amount of IO is required.


  • Dimensions: 170 x 212 x 44 mm (6.7 x 8.3 x 1.7 in)
  • Weight: 1.04 kg (2.29 lb)
  • Material: Aluminium Die Cast, Black Powder Coated
  • Mounting: Flush mount extruded mounting bracket
  • Connectors:
    • 2 x 34 pin AMP Super Seal
    • 2 x 26 pin AMP Super Seal
    • 2 x Link 6 pin
  • Indicators: Power / Fault code indicator LED
  • IP Rating: 54


  • Electronics: Link G4+ Engine Control Platform
  • Processor:
    • 40 MHz dual processor
    • Engine control specific MCU and Digital Signal Processor
  • Memory: 32 Mbit Data Logging Memory
  • Communications
    • USB – PC Tuning
    • 2 x CAN 2.0B – User configurable
    • RS-232
  • Firmware: Link G4+ Firmware V5.5.0 or later. In field firmware updatable
  • Tuning Software: PCLink G4+


  • Password: Password protection can be applied to prevent unintended adjustment
  • Lock: Shipped locked (engine control disabled). Must be unlocked by a Link distributor

Max. Ratings

  • Power Supply: Reverse Polarity protected. Max Continuous operating voltage 24V. Over voltage protection at 27V. Minimum operating voltage 6.5V.
  • Temperature: -40 to + 80 ⁰ C (-40 to 185 ⁰F)


  • Engine Position:
    • Up to 6 engine position sensor inputs (reluctor, hall or optical)
    • Engine position tracking to 0.1 degree accuracy
    • Digital Sampling Oscilloscope on Trigger 1 and 2 Inputs
  • Analog:
    • 20 0-5V Analog Inputs
      • 2 have configurable pullup resistor
      • 2 have permanent pullup resistor
  • Digital
    • 8 Frequency or switching inputs. All with switchable pullup resistor
    • 6 High frequency differential frequency or switching inputs
    • Suitable for ABS or turbo speed sensor
    • 2 Switching inputs
  • Barometric Pressure: Internal factory calibrated barometric pressure sensor (or external sensor option)
  • Knock: 2 Knock sensor inputs
  • Lambda Sensor Control: 2 Internal wideband Lambda sensor controllers utilising latest Bosch OEM digital signal processing technology
  • Thermocouple: 2 Thermocouple amplifiers suitable for K Type thermocouple sensors
  • Accelerometer: 3 Axis accelerometer with orientation correction


  • Injector: 8 Peak and Hold or Saturated injector driver outputs. 10/3A max. Unused injector outputs can be used as general purpose outputs. 0.1 degree, 1.6 us precision
  • Ignition: 8 Ignition pre-amplifier drivers (external igniter required). Unused ignition outputs can be used as general purpose outputs. 2.2A max. 0.1 degree precision.
  • Auxiliary Outputs
    • 4 Low Side Drivers. 2.2A max
    • 4 Low/High Side Drivers. 2.2A max
    • 6 Half Bridge Drivers 8 A max
    • 6 Low Side Drivers with open circuit detection 1 A max
  • Regulated Outputs
    • 8V sensor supply. 200mA max
    • 5V sensor supply. 200mA max


  • Included:

– Flush fit clip in mounting bracket

– USB tuning cable

– Link stickers

  • Optional- Wiring Loom (various length and pin kit options available)

The Thunder also has the Link G4+ platform features

    • This list gives a basic overview of the Link G4+ ECU platform. For full details of the individual adjustments and settings it is recommended that PCLink G4+ is downloaded and installed.Configuration
      • Engine Types

      – 1 to 12 Cylinder (2 or 4 Stroke)- User configurable TDC points (for odd fire engines) and firing order

      • Vehicle Details:

      – Tuner memo and VIN number stored in ECU

      • Types:

      – Single Point- Group Staged- Sequential Staged

      • Calculation: Full Modelled Fuel Equation, Modelled Multi Fuel (Flex Fuel) Equation or Basic Fuel Equation. Full modelled fuel equation considers:- Volumetric Efficiency- Engine Capacity- Fuel System Type and Pressure (Injector Flow Pressure Correction)- Fuel Density Temp. Coefficient- Air Charge Temperature- Injector Size- Injector Characteristic (GM Style)
      • – Injector Dead Time
      • – Fuel Charge Cooling
      • – Stoichiometric Ratio
      • – Fuel Density
      • – Lambda Target
      • – Load Type (MAP, TPS, MAP+TPS, none)
      • Multi Fuel:- Full support for the use of multiple fuels with separate settings for each fuel type and configurable blending between fuels
      • Cold Start:- Configurable cold start/warmup. 2D/3D tables- First Crank and Cranking Enrichment- Warm Up Enrichment
      • – Multi Fuel fuel blend dependent cold start supported
      • – Post Start Enrichment, Hold and Decay
      • – Pre Crank Prime – Key on or crank
      • VE Corrections:- Dual Fuel Table (overlay, switched or blended)- 4D Fuel Tab
      • – 5D Fuel Table
      • – 3D Intake Air Temp
      • Other:- Acceleration Enrichment- Closed Loop Lambda (Dual Bank)- 3D Injector Timing (Start, End or Center)- Corrections by other control features (eg limits, motorsport features)
      • – Staged Injection Primary/Secondary Tuning
      • – Individual Cylinder Fuel Trim
      • – Overrun Fuel Cut
      • Auxiliary Injection:- Additional injector stage control using unused fuel outputs for additional fuel stages or water/alcohol
        • Types:

        – Direct Spark- Twin Distributor- Rotary Leading Wasted

        • Signals:

        – Rising or Falling Spark Edge

        • Ignition Control:

        – Ignition Delay Correction- Maximum Advance Limit

        • Ignition Corrections:
        • Ignition Timing Calculated using:- Ignition Table- ECT Trim Table- 4D Ignition Table- Other control features (eg limits, motorsport features)
          • Multi Fuel:

          – Blending of ignition timing between fuels supported

          • Other:

          – Transient Ignition Retard Control- Individual Cylinder Ignition Correction

          • Memory:

          – 32 Mbit Data Logging Memory

          • Limiting System
            • Used for all limits and configurable for each limit type:
              • Fuel Cut
              • Ignition Cut
              • Rotary Specific
            • Closed loop RPM limiting based on configurable control range
            • 2D/3D Tables
            • Basic/Advanced modes
            • Throttle position dependent cut control
            • Adaptive or Constant cut effects
            • Hard Cut
            • Ignition / Fuel trim during limit
            • Limit exit decay
          • Limit Types:
            • RPM, MAP, Vehicle Speed, System Voltage
            • Two General Purpose Limits with configurable tables (eg oil/fuel pressure or IAT/ECT)

          Output Functions

          • Types:

          – Variable Valve Timing Control for intake and exhaust cams up to 4 cams- Boost Control Solenoid- General Purpose Output with up to three switching conditions and logic mode- Fuel Pump Control- Engine Fan Control- Intercooler Spray Pump- Check Engine Light- ECU Hold Power (Keep Alive)- Electronic Throttle- Oxygen Sensor Heater- Anti-Lag ISC Lift Solenoid- Starter Control Solenoid- Throttle Blip Solenoid- Rotary Oil Pump Position Control- Tumbler Valve Control (Subaru)

          • Virtual Auxiliary:

          – Configurable internal signals that can be used as switching conditions for other ECU functions or to extend output functions number of conditions

          • Timers:

          – Triggerable/resettable timers to be used in sequencing output and internal functions

          • Shift Light:

          – Shift Light control function- Configurable light brightness depending on RPM to shift point

          • CE Light:

          – Check Engine Lamp functionality to display ECU fault codes on the dash. Various modes for light operation

          • Engine Fan:

          – Up to three independent engine fans with temperature, hysteresis and air conditioning options

          • Tacho:

          – Correctable tacho output with key on tacho sweep option

          • Speedo Out:

          – Correctable speedo output with key on speedo sweep option

          • IC Spray:

          – Pulsed intercooler spray pump low frequency PWM with various switching conditions

          • ECU Hold Power:

          – Keep Alive function for controlling EFI main relay to keep the ECU powered for a controlled time after key off

        • – Per gear RPM and control range
        • – Closed Loop Stepper Position Control
        • – Traction Light
        • – Shift Light
        • – Exhaust Power Valve
        • – Cam (switched valve lift / VTEC)
        • – Electronic Throttle Safety Relay
        • – Speedo
        • – Purge Solenoid
        • – Tacho
        • – Air Conditioning Clutch
        • – Fuel Pump Speed Control (switched or PWM)
        • – General Purpose PWM with up to three switching conditions and logic mode
        • – Test On/Off
        • – Idle Speed Control for two/three wise ISC solenoids or four/six terminal stepper motors
        • Engine Protection
        • – Idle Speed Ignition Control
        • – 5D Ignition Table
        • – IAT Trim Table
        • – Dual Ignition Table (Overlay, switched or blended)
        • Fuel Pump Control:

        – Prime time, RPM and fuel flow switched and PWM support

        • Unused Fuel and Ignition Outputs:

        – Can be used for most outputs function types listed above

        • Digital Types:

        – General Purpose Input- Variable Valve Timing Cam Position- Air Conditioning Request- Anti Theft Switch- Power Steer Pressure Switch- Speed Limit Request- Clutch Switch- Cruise Control Switches- Ethanol Content Sensor- Oil Level Switch- Oil Pressure Switch- Traction Disable Switch

        • Analog Types:

        – General Purpose Input- MAP Sensor- Accelerator Position Sensors- Fuel Pressure- Barometric Pressure Sensor- Intake Air Temperature- Rotary Oil Pump Position- Closed Loop Stepper Position Feedback- Crankcase Pressure- Air Conditioning Pressure- Gear Position- Gear Lever Force- Reverse Lever Position

        • Thermocouple:

        – Internal cold junction compensated thermocouple amplifiers

        • Accelerometer:

        – 3 Axis G force sensor

        • Lambda Sensor Control:

        – Internal OEM level wideband Lambda sensor control using latest Bosch digital signal processing technology.

        • Calibrations:

        – Built in calibrations for many industry standard and OEM sensors as well as custom 2 point and tabled calibrations.

        • Fault Detection:

        – Configurable fault detection and fault value for all Analog Inputs with fault code generation

        • Modes:

        – Over 80 built in trigger modes for OEM applications as well as user configurable modes for common configurations

        • Sensors:

        – Supports all OEM Variable Reluctance (VR), Hall or Optical sensors. Aftermarket sensors supported

        • Calibration:

        – Configurable filtering, pullup resistors and threshold voltages for VR sensors

        • VVT Cam Position:

        – Support for up to two engine position (Crank and Cam) and up to four cam position signals

        • Idle Speed Control:

        – Support for most OEM and aftermarket idle control solenoids and stepper motors and electronic throttle- Configurable speed, RPM and throttle position lockouts

        • Electronic Throttle:

        – Support for up to two electronic throttle bodies- Full safety functionality for all sensors, drivers and other parts of the electronic throttle system including safety relay- Support for anti-lag idle up using electronic throttle

        • Boost Control:

        – Basic open loop or advanced closed loop control options- Boost target table blending option for Multi Fuel or dash board adjustment- ECT, IAT and Gear boost corrections

        • Knock Control:

        – Closed loop individual cylinder knock control- Configurable frequency and individual cylinder gain settings- Fast timing removal (retard) and slow reintroduction (advance), all configurable- Per cylinder or grouped knock ignition correction tables

        • Variable Valve Timing (VVT):

        – Over 40 built in OEM VVT signal patterns and user defined signal patterns- Up to three switchable inlet and exhaust position target tables- Supports common PWM and most BMW VANOS control types

        • Cruise Control:

        – Cruise Control using electronic throttle- Safety features to disengage cruise on brake and clutch- Adjustable speed operating range and maximum speed increase rate

        • Air Conditioning (AC) Control:

        – Basic and advanced control modes- AC clutch control based on AC pressure, evaporator temperature and engine load

        • Starter Motor Control:

        – Crank with key, Start/Stop and Touch Start options

        • Transmission:

        – Gear detection using RPM/wheel speed, CAN or gear position sensor- Driven and driving wheel selection- Input shaft RPM calculation

        • ECU Logging:

        – 32 Mbit internal flash- Selectable logging rates up to 100 Hz- Continuous (looping) data recording

        • PCLink Logging:

        – Log any or all parameters in the ECU while connected to PCLink in real time on the screen at rates in excess of 60Hz- Advanced logging analysis and tuning functions

        • Statistics:

        – Resettable statistics including Max RPM, Max ECT, Max MAP, Engine Starts, Engine Running Time and many more

        • CAN:

        – Two CAN 2.0B channels available- CAN bus status and error reporting

        • OBD:

        – ISO 15765-4 (CAN) OBD communication to scan tools and displays

        • RS-232:

        – RS232 connectionMotorsport

        • Anti Lag:

        – Basic and Advanced modes- Activation, ignition retard, fuel addition and ignition cut controls- Multiple switchable Anti Lag tables

        • Launch Control:

        – Single RPM mode for clutch switch or launch button- Latched launch RPM for rolling start- Ignition retard, fuel correction and cut effect options

        • Gear Shift Control:

        – Extremely configurable closed loop gear shift control- Sequential and H pattern gear boxes supported- Downshift RPM lockout

        • Traction Control:

        – Closed loop wheel slip control- Speed and throttle position lockoutsTuning

        • Real Time:

        – All ECU Parameters available for real time display and logging during tuning- Quick view of all ECU runtime information for fast diagnostics

        • ECU Controls:

        – Upload, download and compare maps- Reset statistics- Unlock (Enable) ECU- Enable/disable password protection- Auto throttle position sensor calibration- Trigger scope

        • Tuning:

        – Mixture MAP for fuel tuning correction from logged data- QuickTune for automated fuel tuning

        • Help:

        – Over 800 pages of context sensitive documentation- Access to Link technical support and forums(Purchased Separately)

– Terminal and plug kit – not recommended unless you have access to the correct AMP crimper

– 400mm loom

– 2.5m loom

– 5m loom (ideal for boat installations)

      • Additional Accessories
      • – Help viewer embedded in PCLink for full documentation alongside settings
      • – Knock audio graphical analysis for determining knock filtering frequencies
      • – QuickTrim for calculated VE table correction while tuning
      • – MAP sensor calibration
      • – Temporarily disable password protection until next power cycle
      • – Restore to factory settings
      • – Clear ECU fault codes
      • – Easily upgrade firmware through PCLink
      • – Smoothest most configurable tuning and data display interface available (PCLink G4+)
      • – Multiple per gear slip threshold tables
      • – Fuel or ignition control options
      • – Downshift throttle blip control
      • – Per gear cut, ignition trim, fuel trim and torque reintroduction time settings
      • – Can be used from simple clutch switch through to full closed loop control with strain gauge lever and gear position sensor
      • – Activation and clutch switch options
      • – RPM vs Speed (2D or 3D) for controlled slip
      • – Cool down mode
      • – Configurable smooth or “lumpy” cyclic idle control
      • – Full anti Lag integration with other ECU systems
      • – Multiple data stream options and baud rates supported
      • – OEM Modes and extremely customisable CAN templates for transmission and reception of ECU parameters
      • Communication
      • – Auto history recording to catch an event that happened in the past!
      • – Download all or any part of logging memory for instant display in PCLink
      • – Memory compacting algorithm to ensure maximum memory utilisation and wear leveling
      • – Log up to 100 ECU parameters. All ECU parameters can be logged
      • Logging
      • – Slip % calculation
      • – Auto calculated or user defined gear ratios
      • – RPM, anti-theft and park/neutral lockout options
      • – Engine fan control
      • – Digital or CAN control options
      • – Adaptive driver behaviour recognition for a smooth transition between driver and cruise control
      • – Allows digital and analog cruise switch input
      • – Accurate, fast and stable position control
      • – Up to four independently configurable (two inlet, two exhaust) cam control channels
      • – Permanent memory of timing removed or reset at key on
      • – Adjustable knock window
      • – Uses digital signal processing (DSP) technology for accurate windowed knock level measurement
      • – Staged boost control for fastest spool up and stable control
      • – Up to thee boost target tables
      • – Up to three switchable throttle target tables
      • – Independent or shared throttle target
      • – Engine Fan, Power Steer and Air Conditioning correction
      • – Basic open loop idle speed control and advanced closed loop control options
      • Engine Control
      • – Engine position correction (base timing adjustment) for all trigger modes
      • Engine Position
      • – Software corrected to allow install in any orientation
      • – Fuel Rail Pressure
      • – Fuel Temperature
      • – Lambda (Internal)
      • – Suspension Position
      • – Exhaust Back Pressure
      • – Tumbler Valve Position
      • – Narrow Band Oxygen Sensors
      • – Engine Coolant Temperature
      • – EGT (0-5V)
      • – Oil Pressure
      • – Throttle Position Sensor
      • – Volt Input
      • – Multi Fuel Select Switch
      • – Stop (engine kill) Switch
      • – Dual ECU Mode Switch
      • – Turbo RPM
      • – Brake Switch
      • – Start Signal
      • – Ignition Switch (Key on)
      • – Neutral/Park Switch
      • – Intercooler Spray Request
      • – Wheel Speed
      • – Frequency
      • Input Functions
      • – Minimum Spark Duration Control
      • – ms or duty cycle dwell mode
      • – Rotary Direct Spark
      • – Wasted Spark
      • – Distributor
      • Ignition
      • Intake Air Temperature Sensor

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

– Bosch push in(Aluminium or Steel Mounting Bosses to suit)

    • – Sequential
    • – Multi Point Group
    • Fuel Control
    • – 1 to 4 Rotor
    • Throttle Position Sensor
    • 3 Channel Link Igniter
    • Wideband O2 Controller & Sensor
    • Injector Ballast Resistor Packs

– 1 x 1R (6 x <6R injectors)

– 2 x 1R (12 x <6R injectors)

– 4 x 4R7 (4 x <6R injectors)

– 6 x 4R7 (6 x <6R injectors)


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