What do you think about central injection instead of carburetor?

Hello! I saw there is something in a well-known company… Looks like a carburetor has 2 injection nozzles above (looks like that at least) and is installed instead of the original one. Costs about 800 euros… Ask for the reason that I need a new carburetor. If such an injection system still consumes 3 or 4 liters less then I wouldn’t think for long. How the control is still in my mind is still puzzled about all the factors like temp, vacuum etc.. only you need a normal control unit or? Vl knows who is out there….. Would be great! Thank you