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rusefi_documentation/HOWTO-Miata-NB2-on-Proteus.md

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# This page is still WIP

PnP adapter board

Isometric view of adapter boaard together with proteus

A plug and play adapter board has been developped to get the car to work as easy as possible. It only requires sourcing a tock harness plug and Ampseal 23 pins headers if you want auxiliary functions. More informations are available at this link :

https://rusefi.com/forum/viewtopic.php?f=4&t=1701

Assembled V0.3 Proteus with PnP board

Pin mapping

Interface with proteus

At the moment, the interface between Proteus board and the PnP adapter is handled by hacked up Ampseal connectors. To do that you need to source the male connectors used on Proteus, and cut the plastic shroud on the connector side, flush with the watertight seal if there is any, or with the mounting flange.

A better solution for that would be to source rows of headers with the correct pitch.

Pricing

Unit price for QTY 5 assembled and delivered to Europe is 7$.

Pinning

OEM 72 pins connector

Pin Number Name Proteus pin Type ID Default function
2A Inj 1 B3 Low-Side 1 Injector #1
2B Fan B9 Low-Side 11 Radiator Fan Control Relay Output
2C A/C Fan -- Low-Side xx A/C Fan Control Relay Output
2D Inj 2 B15 Low-Side 2 Injector #2
2G Inj 3 B4 Low-Side 3 Injector #3
2J Inj 4 B16 Low-Side 4 Injector #4
2O - x x
2M Fuel Pump B6 Low-Side 6 Fuel Pump Relay Output
2P IAC Feed 12V Idle Valve Power
2Q IAC Control B7 Low-Side 7 Idle Valve Control
2R MIL B20 Low-Side 10 Check Engine Light output
- - - - -
3A GND A1 Power Ground Ground
3B GND C19 Power Ground Ground
3F Coil #1 B35 Ignition 1 Coil #1 control
3I Coil #2 B22 Ignition 3 Coil #2 control
3H Main Relay B5 Low-Side 5 Main Relay Control
3K - x x
3L - x x
3M Alternator B1 High-Side 2 Alternator Control Output
3N - x x
3O Tach B2 High-Side 1 Tachometer Output
3V Cam C1 Digital 2 Cam shaft Hall Input
3U Alt Warn x x
3Y Crank C10 Digital 1 Crank shaft Hall Input
3Z - x x
- - - -
4A GND Ground Ground
4D VVT Feed 12V VVT Power
4K -
4L - A21 5v Sensor 1 OEM 5V Sensor Power
4N IAT A20 Analog Temp 3 Intake Air Temperature Sensor
4O GND A23 GND Sensor Ground
4P CLT A19 Analog Temp 1 Coolant Temperature Sensor Input
4R VVT B8 Low-side 9 VVT Control
4S Key C18 12V RAW +12v from Ignition Key
4V TPS A14 Analog Volt 3 Throttle Position Sensor
4X MAF A25 Analog Volt 4 Mass airflow sensor, needs pulldown
4AE EGR Boost Sensor A16 Analog Volt 7 MAP
4AF Main Relay Power C23 12V MR +12v from Main Relay

Auxiliary inputs

MAP sensor

Using an external MAP sensor allows you to get the engine running above ambiant pressure when using forced induction. Good cheap option is GM 3 bars but anything will work for you. MAP input can be mapped to Analog Volt 1 (A13 pin).

Note : You can also run the engine naturally aspirated using the OEM "boost sensor". It is located on the EGR systems and is used by stock ECU to determine whether the EGR is working or not. You've probably ditched EGR so far and so you can run a vacuum line from your plenum to this sensor and use it with this calibration:

  • 0V - 15Kpa
  • 5V - 115Kpa

Or you can use the OEM sensor for barometric reading and correction.

WBO2 sensor

To sum up

Tune config

Engine basics

Trigger

Ignition and injection

VVT parameters

Alternator and tachometer

Useful inputs/outputs

Miscellaneous

Running engines forum links