Link G4X AtomX Wire-In ECU

The Link G4X AtomX is a compact entry level wire-in ECU designed for simple engine builds that still require reliable control and proper tuning capability. It suits naturally aspirated setups and basic turbo applications where advanced features and high input output capacity are not required.

Despite its size, the AtomX uses the same microcontroller as the full G4X range, delivering fast processing, responsive tuning and stable operation. It is best suited to builds that do not require drive by wire, extensive auxiliary control or large sensor expansion.

Who This ECU Is For

• Naturally aspirated engines and basic turbo setups
• Street cars requiring reliable standalone ECU control
• 4 cylinder builds with low to moderate complexity
• Users not requiring drive by wire or advanced I O expansion

Key Features

• Sequential fuel and ignition control for up to 4 cylinders
• Supports up to 8 cylinders using batch fire
• Knock control included
• Closed loop lambda control
• CAN bus and USB tuning connection
• 512MB onboard logging memory
• Fast processing using G4X architecture

Key Specifications

• Max cylinders: 4 sequential, 8 batch fire
• Injector outputs: 4
• Ignition outputs: 4
• Drive by wire: No
• Direct injection: No
• Onboard MAP sensor: No
• Onboard wideband: No
• CAN bus: 1
• Logging memory: 512MB

Detailed Specifications

• Analog inputs: 3
• Digital inputs: 2
• Auxiliary outputs: 4
• Trigger inputs: 2 (reluctor, hall or optical)
• Knock inputs: 1
• Injector drives: 4
• Ignition outputs: 4
• Onboard barometric pressure sensor
• Communication: USB and CAN

What You Need To Run This ECU

• Link A loom or terminated wiring harness
• MAP sensor
• Intake air temperature sensor
• Wideband oxygen sensor
• Compatible trigger system

What Is In The Box

• Link G4X AtomX ECU
• USB tuning cable
• Mounting bracket
• Wiring and installation instructions

Important Notes

• Requires Link A loom
• Does not support drive by wire throttle
• Limited inputs and outputs compared to higher tier ECUs
• Not suitable for complex builds requiring extensive auxiliary control
• Professional installation recommended