IIRC the K-lambda system was used nationwide on the 1980 models, might have been as early as 1979 on California-bound cars, but I would have to check that out. The main identifying feature of that system is what Bosch called the frequency valve which looks like an electronic fuel injector in the control pressure circuit of the fuel distributor. This is not the same as the KE-Jetronic system used starting 1986 with the EHA mounted to the fuel distributor.

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Erich Loepke
2010 Ford Focus
Currently Benz-less