Well, I guess I will take a shot in the dark, and if I recall, it was the California emissions Corvette with the 305 in 1980.... it was called Computer Command Control.
Am I close?
As a side note and NOT part of the answer: While at the Chrysler dealership, after Carter quit making carbs and went strictly EFI components, Chrysler bought the Q-jet from GM for the 4 bbl applications, the Diplomats and Grand Furys having O2 feedback, most of the truck apps did not. Quite the little mess of parts I found in that solenoid assembly, it wasn't a 1-piece assembly. A little tricky to service.