Hmmm, well the stock CM fan is SUPPOSED to run at 100cfm. So I don't think that you can increase it. At least not enough to notice it.
Though you should also note that that is for all 3 230mm fans. So 1 fan is 100cfm then you have the front fan set to intake and the top to exhaust. So I think the only thing that you could do with a controller for these is to decrease them not increase.
Nor do I believe you should want to as with all fans (including the 140mm and PSU exhausts) you wouldn't want to mess with the positive airflow. Now should you want a more powerful fan you can get CM fans from Newegg (currently out of stock for the moment) that have 142cfm flow. They are the same footprint as the stock fans with Red LEDs'. Not sure whether or not if they have Blue. Mine are red so you might find some in blue.
I'm not sure which case you got, but my brothers has reverse polarity switches for every fan. It came that way from CM. If yours has them you might try disconnecting one to see which way the fan is set up if its pulling or pushing the air. You can also get a piece of 8x11 paper to see which way the air is flowing. It's relatively simple to achieve this part.
Your fan config should be working like this.
Hope this helps.
Edited by Ceadderman - 3/18/10 at 6:19pm
Originally Posted by EasyC
I got my HAF 932 yesterday and was just testing the side fan out last night, I don't know...it does feel kind of weak, would having a fan controller increase the speed?