When it comes to engine performance, there are two main options for tuning: EFI (Electronic Fuel Injection) and carburetor tuning. While both methods can be used to improve engine performance, there are some key differences between the two. The main difference between EFI and a carburetor is that the EFI is constantly readjusting on the fly, while the carburetor does not. This means that when a carburetor is adjusted (tuned) for a certain set of conditions, such as air temperature and barometric pressure (altitude), it will be disadjusted as soon as those conditions change.
Adjusting a carburetor requires hand tools, while EFI requires entering information into a portable controller. PC tuning is the most complete option available, with software packages designed for different OEMs or ECUs in the aftermarket. This type of tuning gives you control over the entire scope of performance calibration, allowing you to select any combination you can imagine. All the tools are designed for use by a capable person who has experience in adjusting carbohydrates, since the symptoms of the EFI mix are the same as those of Carby. When it comes to cost, EFI systems may require an initial outlay that is more than a carburetor. However, they are worth swapping out because of the overall increase in performance and consistency of performance with EFI.
In many cases, EFI simply isn't available for your engine model, and unless you're very sophisticated in selecting individual EFI components and have the manufacturing skills needed to build your own fuel manifold and rail configuration, carburization is the best option. Carburetors can be properly adjusted to provide an accurate fuel supply, but that setting cannot be changed by external effects. The Edelbrock universal EFI sump kit is designed to provide the high-pressure fuel needed for EFI applications in vehicles that still use a mechanical fuel pump. So which option is best for your vehicle? It really depends on your budget and what type of performance you're looking for. If you're looking for maximum performance and don't mind spending a bit more money upfront, then EFI tuning is probably your best bet. However, if you're on a tighter budget or just want to get some basic performance gains without breaking the bank, then carburetor tuning may be a better option.