The "e-ram" has been around for a while but Im not sure its worth the $300. How long will the electric motor last I wonder??? For example..If you take the $300 and buy some higher ratio rockers, youll see better gains any rpm range. Specially if you have other supporting mods. Electric superchargers are just not practicle. I bet that if you buy a k&n drop in filter and do a little exhaust work you would surpass their 15 horsepower gain or whatever they claim! Shop zzp and dont waste your money. Here's a link to some rockers just as an example.

https://www.zzperformance.com/grand_prix/products1.php?id=426&catid=104