Hi Phil,

I'm unfamiliar with the subtleties of Regina ignition and flywheels, but do know a bit about the Volvo name and how it came to be as a subsidiary of Swedish bearing manufacturer SKF over 100 years ago, well before the first Volvo automobile was built. Their attitude was, if it's got something round that turns, let's put the Volvo name on it.

"Volvere" is the infinitive form of the verb "roll" in Latin. Compare it, for instance, with the word for a handgun with a rotating drum, revolver. In its first person singular form, the verb "volvere" becomes "volvo", i.e. "I roll".

Ref https://www.media.volvocars.com/global/en-gb/media/pressreleases/5059

Interesting how the Volvo name and the Kodak name have something in common -a name purposely chosen to have no R or S in it to so that it's easier to consistently pronounce and spell around the world.

As Art said, best for the OP to reach out to the Turbobricks people for this kind of discussion. A good thread to start reading is this one
https://turbobricks.com/index.php?threads/volv-rex-regina-ecu-chippable.343330/

It's one thing to start throwing parts at a problem before doing a proper diagnosis. It's a whole level up from that to try re-engineering the ECU fuel injection controller. If I had that kind of talent I'd pick a B230FT w/Bosch LH to play with rather than a B230F w/Rex-Regina.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now