Me. AEM. None. Other than not having the urethane bushing and bolt to keep it secure to the frame. But that's because I bought it used.
But the people at AEM were more than willing to send me the parts. Currently, it's being held to the frame with a shoelace. Lulz
OH, also. The MAF sensor cables connected to the battery housing made it so that the bottom portion of the battery housing kind of loose, but it's still good.
You should pull the wiring bundle off the battery box, so as not to put unnecessary stress on the wiring. This is a really common problem with all intakes on the 3, and you will eventually have to replace / repin your MAF wiring harness if you don't give those wires more slack by disconnecting that bundle from the box.