> Mike if you are seriously doing this I sugest you read this post and learn > from others mistakes (as well as your previous ones)... > http://www.se-r-list.org/archives/1998/1998-12/msg01162.html Lee, The Powerdyne unit that Manny used it a centrifical type blower not a roots type like mine. His problem was trying to NOT boost. Where with my blower I can turn it on and off for more power. I am intercooling it also. Mike Jez