Thanks for the help all. I guess now I have one more thing to ask. The Procharger blowthrough set up uses a centrifugal supercharger, yes? I asked about the twin screw design is because I researched both centrifugal and positive displacement superchargers and loved the idea of power with instant throttle response. Will the blow through set up do the same thing? If not, why so many reccommendations towards this particular set up instead?