I have a BOSCH Digifant I ECU removed from my '89 Carat for sale.  Part Number 025 906 022D.
This ECU looks/works like new.  My Vanagon was stolen and stripped - this is one of the parts I was able to recover.

Asking $120.00 plus $10.00 shipping.  If you are in the Los Angeles area, you can come and pick it up yourself if you like.  Goes on Ebay next week if there are no takers here.

I'm located near Glendale/Pasadena.

Frank