After 1500 miles my '09 RS developed the usual messy airbox. I will try to link my pictures. Its simple, 1/2" barbs male and female with stainless airater screens pressed into the joint. I used 2 screens but maybe more would be better. So far its working very well! I hope my links work. Any and all comments welcome. Max.
https://picasaweb.google.com/wmsachs/20110618#
https://picasaweb.google.com/wmsachs/20110618#