Emtron SL8 with AB Harness

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Emtron’s SL4 is a wire in ECU with extreme flexibility. This ECU will support up to 4 Channels of fully sequential Fuel and Ignition. Every unit is housed in a durable billet Aluminium enclosure and includes 32MB permanent memory for on-board logging, 4-channel oscilloscope function, DBW control, Knock control using digital filter technology, high speed Ethernet communications and 3-axis G-force sensing to name a few.


8x Port Injector Outputs—high  ohm

  • 70V clamping
  • Outputs can be used for ground switching, 6A Continuous, 10A Limit
  • All outputs are short circuit and over current protected
  • No Flywheel diodes (external diode(s) required for VVT control)

8x Ignition Outputs

  • Adjustable TTL Ignition drive current (35mA or 70mA)
  • Outputs can be used for ground switching, 1A Continuous, 3A Limit
  • All outputs are short circuit and over current protected
  • No Flywheel diodes (external diode(s) required for VVT control)

10x Auxiliary Outputs

  • Variable Valve Timing (VVT) and Variable Valve Timing Electric (VTiE), Drive by Wire (DBW), dual boost control, gearshift solenoids, stepper motor and many more.
  • All outputs have PWM control, maximum frequency = 15 kHz
  • Flywheel diodes integrated into all outputs
  • All outputs are short circuit and over current protected. 
  • Low Side Driver Auxiliary 1-4: 4A continuous, 6A peak modulated, 8A limit
  • Low Side Driver Auxiliary 5-8: 2.5A continuous, 4A peak modulated, 5A limit
  • High Side Driver Auxiliary 1-8: High Side 4A continuous, 9A limit
  • Half Bridge Driver Auxiliary 9-10: 5A continuous and 8A limit. Can be used as Low Side, High Side or together in H-bridge configuration for DC motor control (DBW)

1x EFI Relay Output

  • Low Side Driver for relay control. Current limited to 200mA (Output will switch ON when Ignition Switch Input (B4) is greater than 4V)

1x Shield Output

  • Connection for Trigger and Knock shielded cables. Short to battery protection


10x Analog Voltage/Temperature Inputs

  • Fully configurable including custom calibrations
  • Switchable 1k ohm pull-up resistors on ANV 7-10 for temperature inputs (available on 4 channels)
  • Accepts a 0.0 – 5.0V analog input. Resolution is 1.22mV (12-Bit)

8x Digital/Speed Inputs/Switched Inputs

  • Frequency range from 0.0Hz up the 30.0kHz on all 8 channels
  • Magnetic and Hall effect sensor compatible on DI 1-4 with programable trigger edge(s)
  • Hall effect sensor only on DI 5-8 with programable trigger edge(s)
  • Independent programable frequency-based arming threshold control, range 0.0 – 12.0V on DI 1-4
  • Fixed frequency-based arming thresholds on DI 5-8. Rising = 1.2V, Falling = 1.0V.
  • Wheel speed, output shaft speed and other frequency-based signals
  • VVT position(s) up to 4 channels available on DI 1- 4.
  • ON/OFF switched inputs: AC request, Launch enable, cruise switch, table control switching etc with arming threshold control, range 0.0 -20.0V
  • Accepts a 0.0 – 20.0V analog input. Resolution is 4.88mV (10-Bit)
  • Switchable 4k7 ohm pull-up resistors on all 8 channels to 10V

2x Knock Inputs with configurable Frequency and Gain.

  • Using Bosch digital knock integrated circuit technology
  • Selectable center frequency from 500Hz – 25kHz
  • Selectable bandwidth from 100Hz – 5kHz
  • Selectable digital filter window; Hamming or Blackman

1x Dedicated Ignition Switch Input

  • 0 – 20.0V input used for EFI Relay Control. (With input > 4V the EFI Relay output (D9) will switch ON)

2x Crank Index and Sync Engine Decoding Inputs

  • Magnetic and Hall effect sensor compatible with programable trigger edge(s)
  • “True” zero crossing detection on magnetic signals for precise engine position decoding.
  • Programmable independent arming threshold control from 0.1V to 12.0V
  • Switchable 4k7 ohm pull-up resistor to 5V
  • OEM patterns supported


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