Here is my current setup... can really feel the heat coming out from the otherside of the duct.... but I find there isn't enough pulling power.... bought a casing fan to be installed at the "exit" but still looking for the cable long enough to connect the fan to my motherboard.

I notice my CPU temperature got increase by 2-3 degrees with this. Usually is about 69-70degress when loaded.. Now is about 70-73 degrees.. Hopefully after install the fan, will be cooler..
But my room does feel a lot cooler compare before.... so I think it somehow works... Any other suggestion to improve on this ugly "mod"