Fan on the intercooler is pretty pointless, its only going to have an effect when the car isnt moving... and the effect its going to have is going to be about the same as throwing a spoon full of water into a swimming pool. attempting to increase horsepower on a car when its sitting still makes no sense.

If you wanted to create a temporary air charge or something to rapidly cool your intercooler, you should use water or nitrous. They make fogger plates specifically intended to cool your intercooler. Obviously that's not something that's very cost effective..... but you can also use water in the plate or make your own with irrigation parts from the hardware store. Most people who do something like that connect the lines from their window washers and divert them to the intercooler, you also have a factory installed control system already in your dash... when you press the window washer button, it sprays water on your intercooler. The downside is, you will now have dirty windows.