The Weber-Alpha carb setup for the Zetec uses fuel injectors. (It also requires the use of a tps sensor.)
An ECU of some sort is still required for ignition timing, fuel control, as well as other sensors on the car (should you choose to keep them).
The carb kits (which are more or less TBs) basicly replace the Single Throttle Body setup with an Individual Throttle Body On Runner setup.
It is a very good way to bring the power in the car up.
A decent setup should bring the Zetec close to 200BHP.
