The G4 Atom runs the same microprocessor and firmware as our top ECU, the G4 Xtreme

 

Designed and built to be the best "value for money" entry level ECU on the market.

While the G4 Atom is entry level, the following is not compromised

• The loom is AVSS automotive quality cable the same as is used in 21st century car manufacturing
   
• The same mounting technology as our higher level ECUs
   
  • A fully extruded mounting plate is included
  • Mounting hardware is completely hidden for a fully professional installation
     
• Waterproof automotive plugs
• The same tuning features as our high-end ECUs - tuning is not compromised in this "entry level" ECU
   
• Full configurability, no preset input/outputs
• Logging, even closed loop fuel and knock if external devices are added (WideBand Controller & G4 KnockBlock)
   
• Industry standard waterproof connectors, mounting bracket and loom, all supplied with your G4 Atom

• Spec overview
  • four injection drives
  • four ignition outputs
  • two analog inputs (you choose, oil pressure etc.)
     
  • two temperature inputs (usually water and inlet air temperature)
     
  • two digital inputs (e.g. vehicle speed and logging switch - you choose)
     
  • four auxiliary outputs (e.g. fuel pump, fans, boost control, O2 heater etc.)
     
  • one, twenty six pin, waterproof connector
  • built in, 2.5 bar, MAP sensor
  • 5V out

 

 

Engine Configurations

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

Fueling Adjustments
 

• 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
• Injection Rate
• Master Enrichment
• Pre-Crank Prime
• Crank Enrichment
• Post Start Enrichment
• Warm Up Enrichment
• Acceleration Enrichment
• IAT Fuel Correction
• Injector Deadtime Compensation
• Overrun Fuel Cut
• Idle Load Trims
• Fuel Temperature Correction
   

Ignition Adjustments
 

• Up to 440 Zone Ignition Table with configurable load and RPM centers. Configurable X and Y Axis Parameters
• Closed Loop Knock Control.  (Requires External Link G4 KnockBlock)
• Crank Dwell Extension
• Maximum Advance
• AFR Table Correction
• Spark Duration
• Beginning / End Injection Definable
• Dwell Time Table.  Configurable X and Y Axis Parameters
   

• Individual Cylinder Trim
• Individual Cylinder Tables
• Multiple Ignition Tables
• Up to 6D Ignition Mapping
• Individual Cylinder Ignition Trim
• IAT Trim
• Voltage Correction
• ECT Trim
• OEM Compatibility
• CDI Compatibility

Limits
 

• Engine Temperature Dependent Progressive Limiting
   
• Vehicle Speed Limit
• System Voltage Limit
• User Configurable RPM Limit based on external input

Triggering
 

• 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

Motor-Sport Features
 

• None, use the G4 Storm
   

Auxiliary Output Options
 

• Each Output independently configurable
• Unused ignition and injection outputs available as auxiliary outputs
• General Purpose Output
• General Purpose PWM
• Closed Loop Idle Speed Control (Solenoid or Stepper (6 Terminal only))
• Fuel Pump
• Fuel Pump Speed Control
• Engine Fan
• Air Con Clutch
• Air Con Fan
• Intercooler Spray
• Tacho
• Check Engine Light
• Purge Solenoid
• Oxygen Sensor Heater
• Switched Cam Solenoid

Processing
 

• 40 MHz Specialised Engine Management Microprocessor
• Ignition control to 0.1 degree, fuel to 0.01 ms
• 32 Bit Calculation
• 10 Bit ADC Resolution
• 20000+ RPM
• 4Mb Non Volatile Flash

Inputs/Output
 

• 4 High Current Injector Drives
• 4 Ignition Channels
• 4 Auxiliary Outputs
• 2 Digital Inputs
• +5V Out
• 2 Temperature Inputs
• 2 0-5V Analog Inputs
• 2 Trigger Inputs (Reluctor, Optical or Hall Sensors)
• On Board Baro Correction (Real Time)
• On Board 2.5 bar MAP Sensor

Communications
 

• Tuning Port USB via adapter cable supplied
• Serial RS232 via adapter cable available separately
   
• CAN - Connector and replacement front plate available separately
   

Analog Inputs
 

• Each channel independently configurable with preset or custom calibrations
• Wide-band O2 (from external controller e.g. Innovate LC1)
• Boost Adjust Signal
• Configurable Fault Detection Settings
• Voltage (0-5V)
• Pyro (from external controller)
• Throttle Position
• Pressure (general purpose, fuel, oil)
• Air Flow Meter
• MAP
• Temperature (coolant, IAT, general purpose)
• Narrow Band O2

Boost Control
 

• Engine Temp Correction
• IAT Correction
• Multiple Boost Tables
• External Adjustment

Idle Control
 

• Reliable and accurate user configurable Closed Loop Control
• Solenoid or Uni-polar 6 terminal stepper only. If 4 wire stepper control is required use the G4 Storm
   
• Aircon, Engine Fan or Power Steer idle up
• Open Loop Control Mode for diagnostics

Environment
 

• Internal Temperature Range -10 - 85oC
• Ambient Temperature Range -30 - 90oC
• Voltage 8 - 22V
• Operating Current 200mA
• Electrical protection on all inputs and outputs

PCLink
 

• Adjust ALL parameters in real time
• Mouse or keyboard operation
• Tuning
• QuickTune - automated fuel self tuning
• Logging Analysis
• Diagnostic Information
• Built In Help
• Definable Screen Layouts
• View over 300 possible runtime parameters

Physical
 

• Length: 79 mm
• Width: 126 mm
• Height: 42 mm
• Weight: 360 grams
• Connector : 26 Pin Waterproof Automotive

Package Contents
 

• G4 Atom ECU
• 2.5 Meter Wiring Harness
• Mounting Brackets and Screws
• Wiring and Installation Instructions

Additional Accessories (Purchased Separately)
 

• Looms
  • Terminal and plug kit - not recommended unless you have access to the correct AMP crimper
  • 250 mm loom
  • 2.5m loom (included in purchase price)
  • 5m loom (ideal for boat installations)
     
• Intake Air Temperature Sensor
  • 3/8 NPT
  • Bosch push in
  • 14mm (Aluminium or Steel Mounting Bosses to suit)
• Throttle Position Sensor
• 2 or 3 Channel Link Igniter
• Narrowband Oxygen Sensor
• Wideband O2 Controller & Sensor
• Injector Ballast Resistor Packs
  • 1 x 1R (6 x <6R injectors)
  • 2 x 1R (12 x <6R injectors)
  • 1 x 4R7 (1 x <6R injectors)
  • 2 x 4R7 (2 x <6R injectors)
  • 1 x 2R2 (1 x <3R injectors)
  • 2 x 2R2 (2 x <3R injectors)
  • 4 x 4R7 (4 x <6R injectors)
  • 6 x 4R7 (6 x <6R injectors)

Manufacturing Standard
 

• ISO 13485

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