[bobcowan]

First off, there's no such thing as a self learning EFI. They're a lot better than they used to be. But you still have to know what you're doing. The computer can process a lot of data, but it's not very smart.

The less expensive EFI's use a central throttle body with injectors. It's essentially an electronic carb with a wet manifold. IMO it's a step up from a carb. But not nearly as good as port injection. You get what you pay for.

Think of it like a carb that's really easy to tune. You don't even need to open the hood to adjust the mixtur.

The $1,400 doesn't always cover everything you need - tuner, O2 sensor and controller, high pressure fuel pump, etc. Just like a carb doesn't always come with everything you need - linkage parts, studs, kick down cables, slosh tubes, etc.