why do you guy's like a turbo vs a centrif Supcharger?

You could but whats the point of two sources of boost....You just cramming more air into your motor to allow more fuel to attach to it and have a more expolsive mixture.Just like nitrous,it is not flammable it just really cold allowing a denser mixture of air and allowing more fuel to attach to it.....
Now A turbo with a nitrous (dental grade) plumbed to the drivers helmet and that would be a ride.....:burnout::burnout::burnout:
TXDart

The idea behind it is to have the turbo start kicking as the supercharger is tapering off, giving a motor the best of both worlds, in theory. The actual application of getting them to work together on the other hand I don't know i've never had the opportunity to talk with someone that's actually done it.