I've as a friend who work in my relative's engineering company (Work on Huge Air conditioning system).
I asked him that the CFM (Air flow rate) or Flowing Air Pressure increase when my fans are placed in parallel.
He answered as that.
"Serial Fans arrangment will increase he Flowing Air Pressure, and Parallel arrangement will increase the CFM (Air Flow Rate)."
I now thinking my first mod by using two equal rpm fans linked up in serial by paper case would have a doubled Flowing Air Pressure.
I would also like to know, Compressed Air means the flow is high? or the Flowing Air Pressure high?
by the way...my Computer photos are here....just taken by little webcam..^^http://zinc_schumacher.sinatown.com/computer.htm