Fuel injection was perfected with the introduction of the ECM onboard computer; all earlier models were big flops for all around driving.
If one could climb down to Jimminy Crickets scale of molecular viewpoints, todays engines are lacklusterly tossing clumps of logs on the fire like wasteful locomotives in an old western.
We would still be breathing wasted combustion byproducts of these "loco ~ motives" just like China is today, were it not for the little heat engines called catalytic converters clinging to our tailpipes under our a$$$es.
But, that's another story of corruption and control I'm not at liberty to reveal.