MustangForums.com - Carb vs EFI

EFI pros:
1.Much more user friendly. It takes care of practically all adjustments and fiddling around just to get a nice ride. Turn the key and go.
2.Due to the precise timing, more power can be attained throughout the RPM band as the computer can regulate conditions immdeiately.
3. Better fuel economy, again due to the computers' adaptivity and speed of processing.
3.a. You get the right amount of fuel ALL the time. You don't have to worry about leaning out when your speed is topping out, or when you accelerate and the gravity could be acting against fuel flow to the carburetor.
4. With the right tools, any problems can be found before you even feel them, and you know exactly what's going on with the car. Just plug the controller into the ECM, have the right software, and there are your codes.
5. You can do anything that carbed can do with your ECM if you program it.

Con:
1.Some problems are more difficult to pinpoint if you don't have a decoder, and if there's something involving wires, then it cantake longer to fix.
2.Sensors are a pain in the arse. Most sensor failures are due to improper torquing, but dirt and such is a nice factor in giving your computer codes or causing you problems.
3.More complex system than carbureted, and requires more specialty tools if you're planning on doing a custom tune yourself.
4.Parts tend to be a mitemore expensive.

If you're into the classic muscle car stuff, where it's ALL mechanical, and you plan on always having somethign to do to the car, then by all means go carbed :P I like carbed because it's all mechanical, and problems are easier to pinpoint (most of the time). But if you're looking for a daily driver as well as a performance vehicle, then I'd have to say EFI.