Your C15 had an electronic controlled carburetor that used a computer to adjust the fuel mixture 10 times per second, probably a Rochester Monojet. It also had an O2 sensor that provided feedback to the computer once the sensor reached 600 degrees F. and started generating a signal.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!