In the history of fuel injection, the alphabet should really start with the letter K. The Bosch K-Jetronic system was not only the first fuel injection system most of us ever saw in any numbers, but a basic design that, for all its Teutonic complexity, lasted while both international emissions regulations and motorists’ expectations made exponentially increasing demands: Make the exhaust environmentally cleaner but make the car’s performance invisible to the motorist, plain, simple and requiring minimum maintenance. The K-Jet, or in its English acronym, CIS, generally worked very reliable.