The 2.1 digifant is the same way. There are at least three versions
available. For the USA market, there were units made by Triumph Adler and
Bosch. Then, there are old and new ("D") versions. And, you can use a
European "E" version, which I beleive is made by yet another company.

Jon

On Tue, 27 Feb 2007, Nathaniel Poole wrote:

> Thanks again. It's strange that the two ECUs are for the same engine
> and yet look so different, Never would've guessed.
>
> Nathaniel
>
> On 2/27/07, Old Volks Home <oldvolkshome@gmail.com> wrote:
> > 025 906 021 is for Digijet 83.5-85 Vanagons.  The one marked "Digijet" is
> > the same thing as well.
> >
> > Here's an excerpt of a post I made to the Vanagon List 10/9/2006 (Damn I luv
> > Google's mail search function!!):
> >
> >
> > Quick data notes:
> >
> > 025 906 021 = Bosch 0280 000 501 or 502 - USA or CDN 1.9 83.5-85
> >   Note:  Bosch Rebuilt CU114X (No Longer Available)
> > 025 906 021A = Bosch 0280 000 509 or 510 - Europe 1.9 83.5-85
> > 025 906 021B = Bosch 0280 000 512 or 513 - Europe 1.9 83.5-85
> > 025 906 021E = Bosch 0280 000 522 or 523 - Europe 2.1 w/Digijet 86-91
> >   Note:  I believe this is the ECU Boston Bob provides, but I really don't
> > know.
> >
> > Sources:  Bosch Data Fiches, "OE to Bosch" and "Bosch to Where Used".--
> > Jim Thompson
> > 84 GL 1.9 "Gloria"
> > 84 Westfalia 2.1 "Ole Putt" (w/2.1 Digijet ECU)
> > 73 K Ghia Coupe "Denise"
> > 72 411 Station Wagon "Pug"
> > oldvolkshome@gmail.com
> >  http://www.oldvolkshome.com
> > ***********************************
> >
> > On 2/27/07, Nathaniel Poole <myth.wright@gmail.com > wrote:
> > > Hey all, I've got two ECUs here and I'm trying to figure which one is
> > > is which. I have one marked Digijet and another with bosch # 025 906
> > > 021. I Believe one is for an 84 1.9 and the other is for a 2.1. Can
> > > anyone help me with this?
> > >
> > > Thanks
> > >
> > > Nathaniel
> >
>