Well...what can I say. I received this device from Play.com today and installed it.
WHAT A PIECE OF CRAP!!!
Once installed (if you can actually do it without breaking something!!) you cannot get HDTV output from the component connections >?? WTF!! I thought the whole concept of this thing was to give you full output ? No matter what i put the switches to on the back , made zero difference. once you power on the xbox360 and go into Display settings, it says HDTV is disabled

What a load of rubbish...and im not convinced either that it expells more hot air....
...my advice...give this a miss. Im going back to my old Intercooler, it fits better (but is noisier).
The faults I found on the Cooler King.
1. difficult to attach - you have to twist it on the connections to get it to go on !!
2. there are no clips to hold this thing in place , can fall off relatively easy !!
3. NO HDTV once connected, you only get PAL 50 or 60 from the Component connections.
... this is going straight on Ebay!
I'm not gonna get it. (i was 2morrowmorning, it looked beter than the intercooler) Waiting for a better product............