The "ML1.1"
and the "M1.1"?
The ML1.1 series came first - 1982
ML1.1
ML1.2
ML2.1
ML3.1
ML4.1
Then BOSCH started over with new model names like M1.1,
M1.3, and M3.1 - about 1987
It was unfortunate that Bosch started a second series of
Motronic ECUs with similar model names.