Help with building your Speeduino, installing it, getting it to run etc.
By Johan

A friend have a Mazda Miata NA1.6 from 1991 and we have just installed a NB1.8 Engine from 1999 into it. We have bought a DIY-EFI CORE4 Mazda MX5 (Miata) Mk1 PnP ECU that we plan to use for engine control. Everything is installed and seems to work, first start up is not far away.

We would like to use one of the outputs to control a relay, and this output should be activated by a certain RPM, say above 5000 RPM this output is active.

How do I do this the easiest way? Can I use any of the spare outputs? How do I control the output and can I use RPM as a activator?

Have read the manual and googled but I’m still not sure how to do it..

I’m totally new into speeduino so all help is appreciated!

Thanks in advance.

Best regards Johan
By dazq
You can use the vvt output to create your rpm based output trigger .set the value in the table to 100 to be on and 0 to be off.

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