This guy has an intercooler that uses refer air inside the intercooler. I know that you can use an electric powered water pump, i wonder if you could do something similar to this. The drain anyway would me minimal.
the #'s of hp lose is negligible then will be more than made up for in hp and milage.

The second one was how a guy modified the intake and outlet ports on a intercooler.
http://home.pacbell.net/jrvog/main.htm
http://home.att.net/~stevemon/IntercoolerMod.html