Here is the supercharger:
http://myhotbmw.com/bmw/Custom//BMW_Electric_Super_Charger_-_Plus_30HP/532589

no.

No thats a joke.

definitely not.

electric supercharger? the only supercharger ive ever herd of was with a pully hooked up to the drive belt, l would imagine that if something would rather have an extra motor in it to move the charger than its probably a waste of money. of course l havent seen it so l dont know for sure.

A 5.0 consumes almost 750 CFM a minute. Maybe more depending on peak RPM.
There might be a little HP gain, but l doubt 30 HP across the ban. Maybe at the low end.
No doubt it is better the previous models, but that does not say much.

around that