You're right, some GA engines use fuel injection, also a 1950s technology. I used to fly a Cardinal with Lycoming IO-360. We got the fancy GAMIjectors and it ma

You're right, some GA engines use fuel injection, also a 1950s technology. I used to fly a Cardinal with Lycoming IO-360. We got the fancy GAMIjectors and it made a huge improvement. Yes, the big exciting 2000s technology was "the holes in the injector are sized to provide calibrated fuel flow". While I'm rambling, the dual spark in a GA engine is really interesting.