The reason for that increased reliability is probably because of pump pressure, not controls. Direct injection has several hundred bar working pressure and a s

The reason for that increased reliability is probably because of pump pressure, not controls. Direct injection has several hundred bar working pressure and a separate filter can be used because of such pressure. Traditional float controlled carburetor probably doesn't work because there is some foreign object stuck in the duct. You cant use heavy filtering because the pressures are almost atmospheric.