I'm curious: When swapping an alternate fuel injected engine into an early Miata, how hard is it to get working gauges on the factory cluster? (tach, temp & oil pressure etc). Engine would be controlled with Megasquirt.
The ECU outputs those signals, so Megasquirt would be taking care of it.
Answer: Easy. 
Actually the oil pressure gauge on an NA is directly hooked up to the sender so all you need is to swap over the sender unit to the later engine.
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