A few weeks ago I purchased this:
http://afepower.com/shop/details_new...BA%&brandID=53
I wish I would have snapped a few pictures during the install, and make a little DIY, but the install was very easy and I just wanted to get it done.
Overall I couldnt be happier with it. The sound is amazing, gives the car a much more agressive tone. You can hear the turbo spool very well now, and the diverter valve is much louder. The car is much more responsive now, I noticed a difference right away. I think it compliments the BMW PPK very well.
I went with the dry air filter. Pictures:
Installed:
