Compatibility among various MED 442, 446, 500 etc

ducapaso · **Posted:** Sat Mar 11, 2017 7:55 pm

I was told that the difference among various digiplex 2S ECU is the different timing setup .
Does any of you happen to find more ifos about that?

micklm · **Posted:** Wed Apr 24, 2019 5:26 am

All I’ve ever found, via Fiat forums is the MED433 advance curves:

This appears to have a lower ceiling for degrees (and lower max rpm) compared to the advance curves in the 906 service manual for the Digiplex S2 MED442A, as you’d expect for a Fiat Uno compared to a 906! Different vacuum steps as well.

Tamburinifan · **Posted:** Wed Apr 24, 2019 12:34 pm

FAQ material. :thumbup:

paso750 · **Posted:** Wed Apr 24, 2019 2:34 pm

micklm · **Posted:** Wed Apr 24, 2019 8:18 pm

G - agree it’s not that useful. Posted more as a caution of what not to buy. And not everyone might have seen the 906 one in the workshop manual to know what to look for when checking other models. Thought it might help get the ball rolling!

paso750 · **Posted:** Wed Apr 24, 2019 9:02 pm

I wasn't criticising! Every info about what or why something won't work is more than welcome. This info is as valuable as info about what will work. :thumbup:

It's just not for the FAQs.

Tamburinifan · **Posted:** Thu Apr 25, 2019 12:51 pm

Aha, the last pic is in manual, sorry.

Compatibility among various MED 442, 446, 500 etc

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