Naturally aspirated means the engine breathes air at regular atmospheric pressure - ie is not turbo or supercharged. The type of fuel delivery has nothing to d

Naturally aspirated means the engine breathes air at regular atmospheric pressure - ie is not turbo or supercharged. The type of fuel delivery has nothing to do with whether it is naturally aspirated or not. A NA engine can have fuel injection and a supercharged engine can have a carburettor.