It's an odd aspect of this line, that each system's version of the
Intercooler has had different types of problems. There are only two issues I have with the Wii version of this product.
The main one, and probably the worst in my opinion, is that the Intercooler doesn't fit right with my particular setup. The Intercooler is designed to clip over the exhaust area of your Wii. Not only does it have two clips that fit around the long-ways direction of your system (damn these days when systems can lay in two directions -- I can't say "vertical"), but it also has clips that go the other direction and fit at the extremes of the exhaust area. Consequently, you have to fit it exactly in place.
So why is this a problem? I am using Psyclone brand component cables, which unlike the official Nintendo brand (which came out later than I was willing to wait) have a wider grip around the part that plugs into the Wii. So, if you are using that brand, the Intercooler doesn't quite fit right. In fact, I have it sort of hanging off of my Wii. This one really irks me because it isn't like the cables came out after the Intercooler. I just feel like Nyko should have tested the accessory against all existing products in order to make sure it fits optimally.
The other issue is more of a minor annoyance. One of the biggest aspects of the Wii that Nintendo has pushed is Wii Connect 24, where your system stays in a sleep mode all the time so it can receive messages and other interactions can occur even if you aren't at your system. Unfortunately, it seems like the Intercooler can't tell the difference between sleep mode and completely on. This means that the Intercooler was on all the time. This is only slightly annoying because I have gotten used the sound of a fan coming from my entertainment cabinet, but it seems like the device might need to be just a little smarter.
So should you get an Intercooler for your Wii? Like I said, I have never really been worried about my Wii overheating like the other systems might, but if you are, then you might want to look at this device. I warn you though, check out your cables before you purchase it. If it's not the official Nintendo products, you might be a bit disappointed.