Variable

Number

Details

Analogue 0-5V inputs

11

Each is 0 – 5.5V, 55k input impedance

• 2 x TPS / pedal position
• 6 x pressure – Oil, Fuel, Internal intake MAP, internal exhaust MAP, external intake MAP, external exhaust MAP
• 3 x spare for servo feedback / external inputs

Analogue oxygen sensor inputs

2

Each can be either:

• 0 – 5.5V, 55k input impedance
• 0- 3.3V, 1M input impedance

Temperature inputs

4

Each is 0 – 5.5V, 55k input impedance to ground
Each can be:

• Non-biased, eg in piggyback mode. Calibration is in mV
• Biased, calibration is in Ohms. 3 internal pull-ups, 1k5, 2k2, 4k7, automatically selected by the ECU

Manifold air temperature, coolant temperature, oil temperature, fuel temperature

Crank trigger inputs

3

• Selectable 2k2 pullup (on in digital mode, off in reluctor mode)
• Variable voltage trigger threshold from 0 to 65V – either arm input for reluctor or threshold for digital input
• AC coupled zero crossing trigger in reluctor mode
• Variable filtering 1 to 192 µs
• See built-in scope section

Vehicle speed input

1

• Selectable 2k2 pullup
• Variable voltage trigger threshold from 0 to 65V
• Variable filtering 1 to 192 µs
• See built-in scope section

Sensor power and ground

• 5V regulated output for sensors, max 100 mA, current limited (voltage is monitored by ECU)
• Sensor ground connected to ground inside ECU under firmware control to detect external ground loops in the wiring (voltage is monitored by ECU)

Knock inputs

1

• 50 k input impedance
• Sampled at 80 kHz (12-bit resolution, 3.3V peak to peak max voltage),
• Variable second order highpass and lowpass filters
• Selectable start and end of sampling windows (in crank angle)

Wired Outputs

2

• Dedicated outputs for tacho and EFI relay
• Tacho output has inductor to generate back-EMF spike for impulse tachometers.
• EFI relay output can be configured as fuel pump or EFI relay. Switches to ground, current limited to 600 mA

Headphone output

1

Mono output, can be selected as direct knock input or filtered knock input

Power sources

3

ECU can be powered by 12V EFI input, ignition switch, or USB (USB for settings / firmware upgrades / log retrieval only; 12V must be applied to read inputs)

CAN channel

1

• Up to 1 Mbps
• Internal 120 Ohm terminating resistor can be turned on and off with ECU setting on each channel

USB connection

1

• Standard USB mini AB connector.
• 12 Mbps max speed
• USB appears as mass storage device (USB stick); no drivers are necessary
• Software installer included on mass storage device

Serial connections

4

• All 4 use 4-pin Molex connectors
• 2 x serial in (ground, transmit, receive)
• 1 x serial out (ground, transmit, receive)
• 1 x controller out (ground, transmit, receive and 12V switched, current limited power) – eg for dash, hand controller

Wireless connection

1

• Access point
• 230kbps max speed
• Settings and live data only (no log retrieval due to speed)

Inbuilt sensors

• Microphone
• 3 axis accelerometer
• 3 axis rate gyro

Inbuilt logging

32 MB

• Max 30 hrs @ 10 Hz, 13 channels
• Min 20 mins @ 100 Hz, 125 channels

Exception (fault) detection

16 MB

Separate logging memory for storing logs during “exceptions” (sensor / trigger faults etc)

Built-in scope

4 channels

• Max sample rate 200 kHz (5µs sample period)
• 1000 samples per screen (min 5ms across the screen)
• Analogue trigger inputs sampled at 40 kHz

Channels include

• Analogue CAS inputs
• Peak detected CAS voltages
• CAS threshold voltages
• Filtered CAS inputs
• Analogue external inputs
• Raw and filtered knock waveforms
• Current engine angle
• Calibrated input values
• Intermediate calculation values
• Output calculated values

Main loop execution speed

Variable depending on tuning mode and corrections enabled, 400 Hz nominal

Number of injector outputs

8

• Switching topology for low heating
• Peak and hold current waveforms
• Programmable peak and hold current
• Max current per channel 4A continuous
• Nominal current per channel 1A (can be controlled in software)
• Unused injector outputs can be configured as auxiliary outputs, PWM capable, but only switching to ground
• Output voltage and current monitored

Number of ignition outputs

8

• Appears as a 470 Ohm to supply when high, short to ground when low
• Current limited output
• Unused injector outputs can be configured as auxiliary outputs, PWM capable, but only switching to ground, and only low current
• Voltage and current monitored

Number of aux outputs

4

• Push-pull outputs (can drive high or low)
• High side current limited to 1.2A
• Low side current up to 4A continuous
• Can be PWM but not engine synchronous
• Voltage and current monitored

Hardware upgrades

1

• Small Modules ( analogue input, real – time input, drive – by – wire control and output module)