[technothrasher]

If the ignition unit dies, the car will just turn off. I did add the power supply hardening, am using automotive rated components, and I'm actually able to ignore one of the three engine speed/TDC sensors in the car upon failure and still run, but other than that no redundancy. The original boxes do not have any redundancy either, so I'm still providing a "like OEM" solution.

[bayindirh]

I know at least one Ford ECU (1996 Ford Escort ZETEC) which has a limp-mode backup controller if the main ECU processor dies, so no, at least some ECUs have redundancies inside.

[technothrasher]

Oh, I'm sure a lot of engine ECUs have redundancies, probably most at this point. I was speaking toward the Magnetti Marelli Digiplex ECUs from the 1980's specifically. They have no redundancy.

[Zemtomo]

Cool to read about this.

I'm in Munich close to Bmw etc and whenever I did something with automotive it would say 'automotive grade components '.

I would not have assumed this would just work.

Is this also connected to can? Or is this only for old cars? So what inputs does it use?

[technothrasher]

It is only for direct replacement of the OEM ignition units on these Ferraris. The cars pre-date any kind of diagnostic bus. Although some cars of the era did have at least some flash code based diagnostics, the Ferraris really had nothing until the 348 came out in 1989.