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 Post subject: Compatibility among various MED 442, 446, 500 etc
PostPosted: Sat Mar 11, 2017 7:55 pm 
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paso grand pooh-bah
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Joined: Sun Aug 01, 2004 12:00 am
Posts: 1097
Location: siena, italy
model: 750 Paso
year: 1988
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?

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Black "DUKE" 751582
ex...Red "smooth" 753349 :-(


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 Post subject: Re: Compatibility among various MED 442, 446, 500 etc
PostPosted: Wed Apr 24, 2019 5:26 am 
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Joined: Fri Jun 05, 2009 8:53 pm
Posts: 103
Location: Taranaki, New Zealand
model: 906 Paso
year: 1989
All I’ve ever found, via Fiat forums is the MED433 advance curves:

Image

Image

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.

Image

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906 Paso 1989 w/ 17in wheels :)


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 Post subject: Re: Compatibility among various MED 442, 446, 500 etc
PostPosted: Wed Apr 24, 2019 12:34 pm 
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paso grand pooh-bah

Joined: Thu Jun 21, 2007 12:00 am
Posts: 1469
Location: Gothenburg, SWEDEN
model: 907 I.E.
year: 1991
FAQ material. :thumbup:

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M900 -97
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 Post subject: Re: Compatibility among various MED 442, 446, 500 etc
PostPosted: Wed Apr 24, 2019 2:34 pm 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5353
Location: southern Germany
model: 750 Paso
year: 1987
Quote:
FAQ material

What is? The chart is in the wsm and 433 chart is one of many which is not relevant for the 906.

G.


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 Post subject: Re: Compatibility among various MED 442, 446, 500 etc
PostPosted: Wed Apr 24, 2019 8:18 pm 
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Joined: Fri Jun 05, 2009 8:53 pm
Posts: 103
Location: Taranaki, New Zealand
model: 906 Paso
year: 1989
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!

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906 Paso 1989 w/ 17in wheels :)


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 Post subject: Re: Compatibility among various MED 442, 446, 500 etc
PostPosted: Wed Apr 24, 2019 9:02 pm 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5353
Location: southern Germany
model: 750 Paso
year: 1987
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.


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 Post subject: Re: Compatibility among various MED 442, 446, 500 etc
PostPosted: Thu Apr 25, 2019 12:51 pm 
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paso grand pooh-bah

Joined: Thu Jun 21, 2007 12:00 am
Posts: 1469
Location: Gothenburg, SWEDEN
model: 907 I.E.
year: 1991
Aha, the last pic is in manual, sorry.

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Gert

907 I.E. -91
M900 -97
MTS 1100s -07


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