This is easily the best non-EFI distributor-based ignition system I have ever seen or used; click here =>
https://progressionignition.com.
A friend has a 68-muscle car with a lumpy cam and poor idle vacuum. It was extremely difficult to get a new (brand name omitted) vacuum-based system to work properly because of the very low idle vacuum the lumpy cam produced. This distributor makes it a walk in the park. There are no mechanical adjustments in the distributor.
The distributor controls ignition timing 100% electronically. Your smartphone is used for tuning and also to see real time data from the engine using the free app that runs on both iOS and Android phones
Because this distributor's timing is set using a timing map like an EFI system uses, the manifold vacuum, or lack of it at low engine speeds, had no effect at all on my friend's car. You could command the exact amount of advance you wanted, exactly where you wanted it, and the distributor did precisely what you told it to do!!
A couple of other niceties are that you access all the features with your smartphone, and when you park the car, the smartphone can disable the ignition for theft prevention. There are many other nice features, but in the simplest of terms, this is one kick-ass distributor based ignition with the programmability/adjustability of an EFI-based ignition.
PostScript:
Here is a YouTube link on how to use the theft prevention feature; click here =>
Theft Prevention Demo
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