[citation needed] It was among the first units with manufacturer-customizable fuel delivery maps which used rpm, throttle position, temperature, and sometimes barometric pressure as inputs.
This was accomplished mechanically, not electronically, using cones (irregularly shaped, two-dimensional cams) to encode the maps.
[citation needed] In the late 1960s and early 1970s, it was fitted to a variety of production vehicles from BMW, Ford UK, Lancia, Peugeot - 404 and 504 between 1961 and 1983, and others.
[citation needed] Due to high manufacturing cost however, it became economically undesirable with the introduction of cheaper electronic engine management systems (and continuous-injection mechanical systems) by the end of the decade.
[citation needed] However, the Kugelfischer system continued to be used as a specialty injection pump for purpose-built race engines into the 1980s such as the 1982 Porsche 911 SC/RS.