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Description
Link Thunder G4+ Standalone ECU - Digital onboard WidebandRead more about our Fitting, Wiring and Mapping service HERE The Link G4+ range of engine management systems are already well known for delivering class leading performance without sacrificing factory levels of drivability. Why the Thunder? You have been asking for more! More digital inputs, more analog inputs, more auxiliary outputs more, More, MORE. We have answered your call and give you the brand new G4+ Thunder with more of everything. Using the
Read more about our Fitting, Wiring and Mapping service HERE
The Link G4+ range of engine management systems are already well known for delivering class-leading performance without sacrificing factory levels of drivability.
Why the Thunder?
You have been asking for more! More digital inputs, more analog inputs, more auxiliary outputs - more, More, MORE.
We have answered your call and give you the brand new G4+ Thunder with more of everything. Using the same pinout for the A & B connectors giving seamless upgrading from our other ECUs, the Thunder has 2 additional connectors (C & D) for increased capacity. This is the ECU for your high end applications requiring maximum performance, flexibility and tuning control, with the same sleek profile of our other G4+ ECUs
NB: This ECU comes with 2 connectors (A+B) if you specify no loom. If you specify looms, you get Looms A+B and also connectors C+D (no looms are available for C+D)
- 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.
Body
- 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
Platform
- Electronics: Link G4+ Engine Control Platform
- Processor:
- 40 MHz dual processor
- Engine control specific MCU and Digital Signal Processor
- Memory: 32 MB 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+
Security
- 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)
Inputs
- 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
- 20 0-5V Analog Inputs
- 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
Outputs
- 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
Accessories
- 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
Link G4+ Platform Features
This chart gives a basic overview of the Link G4+ ECU platform. Full full details of the individual adjustments and settings it is recommended that PCLink G4+ is downloaded and installed.
* Note - Not all features are supported by every Link G4+ ECU type. Refer to the feature differentiation matrix.
Configuration
- Engine Types
- 1 to 12 Cylinder (2 or 4 Stroke)
- 1 to 4 Rotor
- User configurable TDC points (for odd fire engines) and firing order
- Vehicle Details: Tuner memo and VIN number stored in ECU
Fuel Control
- Types:
- Single Point
- Multi Point Group
- Group Staged
- Sequential
- Sequential Staged
- Calculation: Full Modelled Fuel Equation, Modelled Multi Fuel (Flex Fuel) Equation or Basic Fuel Equation. Full modelled fuel equation considers:
- Volumetric Efficiency
- Load Type (MAP, TPS, MAP+TPS, none)
- Engine Capacity
- Lambda Target
- Fuel System Type and Pressure (Injector Flow Pressure Correction)
- Fuel Density
- Fuel Density Temp. Coefficient
- Stoichiometric Ratio
- Air Charge Temperature
- Fuel Charge Cooling
- Injector Size
- Injector Dead Time
- Injector Characteristic (GM Style)
- 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
- Pre Crank Prime - Key on or crank
- First Crank and Cranking Enrichment
- Post Start Enrichment, Hold and Decay
- Warm Up Enrichment
- Multi Fuel fuel blend dependent cold start supported
- VE Corrections:
- Dual Fuel Table (overlay, switched or blended)
- 3D Intake Air Temp
- 4D Fuel Tab
- 5D Fuel Table
- Other:
- Acceleration Enrichment
- Overrun Fuel Cut
- Closed Loop Lambda (Dual Bank) *
- Individual Cylinder Fuel Trim
- 3D Injector Timing (Start, End or Center)
- Staged Injection Primary/Secondary Tuning
- Corrections by other control features (eg limits, motorsport features)
- Auxiliary Injection: Additional injector stage control using unused fuel outputs for additional fuel stages or water/alcohol
Ignition
- Types:
- Direct Spark
- Distributor
- Twin Distributor
- Wasted Spark
- Rotary Leading Wasted
- Rotary Direct Spark
- Signals:
- Rising or Falling Spark Edge
- ms or duty cycle dwell mode
- Ignition Control:
- Ignition Delay Correction
- Minimum Spark Duration Control
- Maximum Advance Limit
- Ignition Corrections:
- Ignition Timing Calculated using:
- Ignition Table
- Dual Ignition Table (Overlay, switched or blended)
- ECT Trim Table
- IAT Trim Table
- 4D Ignition Table
- 5D Ignition Table
- Other control features (eg limits, motorsport features)
- Ignition Timing Calculated using:
- Multi Fuel: Blending of ignition timing between fuels supported
- Other:
- Transient Ignition Retard Control
- Idle Speed Ignition Control
- Individual Cylinder Ignition Correction
- Memory: 32 MB Data Logging Memory
Engine Protection
- 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
-
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- Used for all limits and configurable for each limit type:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
The only toy my dogs can’t destroy and love
Color: Onyx Black - Most Durable
I am thrilled to have found one toy my dogs don’t destroy immediately. They have torn up Fenrir hammers, the black kongs of all sizes, the monster k9 stick, nylabones, and they don’t like the goughnut at all (it stinks like a bad tire). This is the first one they both love and haven’t been able to destroy immediately. It does allow little tooth marks, but that’s what makes it fun for them. They are very happy playing with it and I’d say this one was worth every dollar.
Update Months Later: We’ve gone through 2/3 now. I got two initially, and one has lasted long term. They still haven’t completely destroyed it. They did destroy a second one quickly so I suspect a flaw in it. They sent me a new one and they took a while, but they did destroy the third to the point we had to throw it away. Despite that, one still remains and our dogs still love it. It’s still the best for the money compared to others. We have two Bully XL’s that are each close to 100 pounds.
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Reviewed in the United States on April 11, 2024
★★★★★ 5
Indestructible
Color: Onyx Black - Most Durable
This is actually indestrutible! Be careful though, it's wicked hard/heavy. It isn't a ball you want banging into things. Use outside!!
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Reviewed in the United States on April 23, 2026
★★★★★ 4
Not indestructible, but the best I’ve found
Color: Onyx Black - Most Durable, Color: Onyx Black - Most Durable
This thing is unexpectedly heavy for its size. My 18 month old Giant Schnauzer is obsessed with fetch but destroys every ball she gets. The other brands marketed for extreme chewers tend to last about a day or two before they’re totally shredded. She’s had this one for about 2 weeks and it’s looking rough, but still holding together for the most part. I appreciate that as it comes apart it does so in little pieces rather than large chunks. While it’s far from indestructible, it’s the strongest I’ve found so far.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great product!
Color: Onyx Black - Most Durable
Great product! Quickly became my Pit Princess's favorite toy! The size, weight, and material is perfect for a big dog. Now we have fetch ball that has proven itself to be worthy!
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Reviewed in the United States on May 8, 2026
★★★★★ 3
good but not indestructible
Color: Onyx Black - Most Durable, Color: Onyx Black - Most Durable
pretty good but definitely not indestructible
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Reviewed in the United States on April 18, 2026