Link G4X AtomX ECU Standalone Engine Management System for Honda OBD1/OBD2

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  • Regular price $1,050.00


Attention Honda enthusiasts! The 90's called and they want their ECU's back.

Replace your out-dated chipped Honda ECU's for a modern cost-effecitve standalone solution. Our in-house designed jumper harnesses allow you to easily upgrade to a Link ECU AtomX from a P28/P72 ECU. (For both OBD1 or OBD2!)

The Link ECU AtomX has faster processors along with engine protection capabilities and motorsport features not available on out-dated ECU's. Take advantage of these capabilities to maximize and protect your expensive, high-performance engine. These ECU's can detect and respond to potentially dangerous and/or damaging conditions faster than even the best driver ensuring that you can keep racing even in the harshest conditions.


The Link G4X range of engine management systems builds upon the previous G4+ ECUs by featuring an all new micro-processor, an upgraded communications chip and expanded data logging. These improvements allow for a more responsive and accurate tune, much faster download speeds and far greater internal data logging capacity.

The Link G4X range of engine management systems are well known for delivering class-leading performance without sacrificing factory levels of drivability. 

The Link G4X AtomX ECU is the latest version of Link's 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 than 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 100 kSamples/sec.

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. Or, it can be used for up to eight cylinders using batch fire. Now featuring Knock Control.

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.

Ideal Applications:

  • 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)


  • 2 x Digital inputs
  • 2 x Temperature inputs
  • 3 x Analog inputs
  • 2 x Trigger inputs
  • 1 x Knock Input


  • 4 x Injector drives
  • 4 x Ignition drivers
  • 4 x Auxiliary outputs^
  • +5V Sensor power supply
  • Note: unused ignition drives can be used as additional Aux outputs


  • 1 x CAN bus
  • 1 x USB tuning connection
  • 1 x thirty four pin, waterproof connector
  • Upgraded Communications Chip

Package Includes

  • G4X AtomX ECU
  • USB tuning cable
  • Mounting Bracket
  • Wiring and Installation Instructions
  • 2 large Link Stickers
  • 2 small Link Stickers

Physical Dimensions

  • Length: 79 mm
  • Width: 126 mm
  • Height: 42 mm
  • Weight: 360 grams
  • Connector : 34 Pin Waterproof Automotive