Consistency. Not that carburetors don’t work well, they do. But not always. Whether it’s dirt, weather change or some other factor, they can sputter and be difficult to start.
Fuel injection isn’t as sensitive. You don’t need to pump the gas pedal to get it going. Most aftermarket units are equipped with self-tuning and learning. They are electronically controlled by their own stand alone ECU. Companies like Holley, FITech, Edelbrock and FAST produce bolt on kits. There are many versions and your choice somewhat depends on the amount of horsepower your motor produces.