Check out this electric supercharger, not that lawn blower crap either
The only problem is that it only boosts for 15 seconds and 20 mins of recharge time, adds 75 hp also, I guess better than NOS without the refill, but then again the thing costs over 2 grand
Heres the link
http://www.boosthead.com/product.php#

 

Yeah, I've seen that, there was a post a few days ago about electric superchargers in general but it got locked. I don't doubt that it works, but for $2,000 if you have a VG you might as well just do a real turbo project with Z parts instead.

 

Yeah I know, I just though it was kinda different, but it is a waste