These electric turbos/superchargers are rubbish chances are they will actually impede airflow anything above a third up the rev range, but the theory and potential is there, just trying to move enough air (commonly measued in cubic feet (CFM)) with an electrical motor driven impeller is not an easy task, it would have to spin the same as a normal turbo (somewhere near 130K RPM, please corrrect me if i'm wrong) and that isn't going to happen without a gearbox and a powerful motor that will drain ALOT of power, on top of that its got to actually force the air into the engine and with current technology makes it more hassle than its worth), thats how i understand it anyway.
a standard subaru turbo moves 360CFM at 14.7PSI
a toro ultra (leaf)blower moves 385CFM
alot of the electric turbo kits offer 250CFM which sounds good yeah... not really, that measurement is unrestricted in one side out the other, put that same fan in a situation like the subaru where it needs to push against 14.7PSI of pressure chances are the fan will leak boost and loose RPM and only move what the restricted flow of the intake pull past that cheap plastic waste of money
They are my 2 cents, but i used to drive a peugeot, so feel free to ignore me