Volvo has something similar in their latest engines, they call it power pulse. It's building up the turbo with an electric compressor and opposed to audi e-turb

Volvo has something similar in their latest engines, they call it power pulse. It's building up the turbo with an electric compressor and opposed to audi e-turbo the pressure is also stored in a pressure tank instead of constantly pumped by the compressor, which at least on paper sounds like it would reduce the lag even more. Anyone got more experience?