UK: Although many people will regard the Bosch D-Jetronic system as out-of-date and irrelevant I do not agree with that view at all. It is the ancestor of all modern EFI and engine management systems and I think if more people had a thorough understanding of this relatively simple system there would be a far better general grasp of the workings of later systems. There is no better starting point for anyone who wants to learn about this important subject.
JAGUAR V12 FUEL INJECTION 1975-1980 - D Jetronic
http://www.jagweb.com/aj6eng/djetronic.php