Anyone tried an electric supercharger?

Anyone tried an electric supercharger, turbocharger? I know these superchargers are sketchy but even if it delivers a fraction of their claim it'd be worth it. I saw this www.electricchargers.com. I think there's a few others. They say they have one for my Tiberon. Anyone actually tried one?

Thanks,
Jordan

They are total snake oil.  Any claims of improved peformance is B.S.  They consume more power than they produce.

Yeah They're crap and I wouldn't recomend wasting your money

This guy is a Spammer. He has been hitting lots of forums