kcress, in his opening posts about this, Chevy said he was looking to make something like an additional 20 to 25 hp. I'm no engineer and will of course yield to your computations, but I don't think he's thinking 5 psi. That much boost might add something over 100 hp pretty easily. I've been told somewhere along the way that it takes 1.6 cfm to make 1 hp, so do you think it's possible for an electrically-driven fan to produce the additional 32 cfm required to support an addditional 20 hp?