EFI Technology C8

SKU: ET-R051-002 Categories: ,


Eight Channel CDI


The Eight channel CDI is a compact eight output Capacitive Discharge Ignition system that is designed to be triggered by an ECU and drive up to eight external CDI coils. The enclosure is extruded 6061 aluminium that is environmentally sealed and features Autosport 12 and 19 pin main connectors.


The CDI has the following features:

  • Compact design
  • High primary output
  • Low power consumption
  • High RPM operation
  • Transient protected
  • Reverse polarity protection
  • Tachometer output
  • Low Voltage operation
  • CDI temp output


The C8 Multi-Channel CDI utilizes a proprietary high efficiency transformer and power stage design that allows full operation down to 10 volts. Its compact design features an integrated heatsink with Autosport connectors allowing for a small lightweight package with high output. The design features 4 status LED indicators for :- Battery power, Switched 12v, 500v charging circuit and valid input trigger. Superior performance is achieved by reducing spark scatter, maximizing charge time and eliminating the voltage drop across the traditional cap and rotor.

Performance Data

  • 16,000 max RPM range
  • 10A load at 12,000 rpm
  • 500 volts primary
  • 50kV secondary
  • 185mj spark energy
  • Rising edge trigger


  • Enclosure: Extruded 6061 Aluminum
  • Construction: CMOS surface mount design
  • Environmental: Environmentally sealed
  • Connector: Autosport 12 and 19pin
  • Dimensions: 4.9″ x 4.8″ x 1.40″
  • Weight: 1.20 lbs.
  • Power Supply: 10 to 18 volts transient protected
  • Power Consumption: 0.5 watt @ 14 volts
  • Operating Temp: -40 to +85 C continous
  • EMI Protection: Exceeds 100V/m > 1GHz


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Installation Drawing

CDI Connector Pinout