A couple of links I picked up from the type3 list the other day, it fits this
thread quite nice!

*K-jetronic info: http://www.students.tut.fi/~hezekiel/bosch.htm

While I know neither the Digijet or Digifant is any similar to the K-jetronic,
this page describes the FI system in general, and also includes good info on
Lambda (O2) sensor, and the work it performs.

*Build an O2 indicator: http://www.students.tut.fi/~eppu/dev/EGO-bar.html

This gives you straight information on how your engine is performing, I would
have built one IF I had an O2 sensor on my car. Maybe I should install one, just
for this indicator guage?

PerL
87 Syncro 112i