Port Injection vs Direct Injection

Port Injection 

Better known as Multi Port Fuel Injection (MPFI), is a fuel delivery system in which fuel is injected into the engine through multiple ports or injectors, rather than a single central location. This allows for more precise control of the fuel-air mixture entering the engine, resulting in improved combustion and increased engine efficiency. It is most commonly used in modern gasoline engines, but can also be found in diesel engines and alternative fuel vehicles.

Direct Injection

Direct injection is a fuel delivery system in which fuel is injected directly into the combustion chamber of an internal combustion engine, rather than the intake manifold or port. This allows for more precise control of the fuel-air mixture entering the engine, resulting in improved combustion and increased engine efficiency. Direct injection can also increase the compression ratio of the engine, further improving efficiency. It is commonly used in modern gasoline engines and some diesel engines.

Which is better?

In my opinion, Port Injection is better. That is just an opinion and it might change in the future but it's what I honestly believe at the moment. Port Injection has been making great things happen for years in performance applications and stock engines. Port Injection can give a accurate distribution of fuel across all cylinders and that is my main reason obviously but the injectors are cheaper, upgrading pumps is cheaper and the valve cleaning from port injection is great for street vehicles. Direct Injection cleaning can be a pain and is just an extra maintenance expense. When they're more prominent in racing without port injection I might change my mind.