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Updated Miata NA 48 pin board for MRE (version 0.2) (markdown)

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stefanst 2020-07-02 22:05:34 -04:00
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Miata-NA-48-pin-board-for-MRE-(version-0.2).md
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This is a PNP adapter board for NA Miatas (1990-1995). The board is true plug and play. Just replace the PCB in your ECU with this board and drive the car. The hardware capabilities are defined by the MicroRuseEfi module that drives the unit.
Your board should look something like this
[MRE Miata NA board](Hardware/pnp_microRusEfi_48na/Whole_PCB_top_view.png)
Currently the only tested configuration is the NA6 Miata with a manual transmission. If you have a different car, we may need your help testing the configuration! Automatic transmission cars are definitely not confirmed to work.
The standard configuration runs the engine using he stock AFM (Air Flow Meter) to measure engine load. However, the AFM on early Miatas is an actual restriction in the intake and costs possibly as much as 3hp (this is a guess). It's also useless if you want to add boost to the car- the capability to measure airflow peters out well below the airflow capabilities of even a mild turbo or SC setup.