There is a guy building /built a 944 SSie bike on the PBMAG forum. I think he's Belgian.
Has got it to weigh 146kg dry and 98BHP !!!
Anyway he runs pod style filter and when asked about it here is his reply and I quote,
" Most desmodue racebikes (like the Italian Bike store 2V Demon) I have seen don't run airboxes and ramair-boxes are totally useless because the top speed of these bikes isn't high enough to produce airpressure big enough to give more Hp! The only thing you have to do is fitting a shield behind the oilcooler so the injection doesn't swallow hot air (this costs you 2-3hp)"
Here is a link to his pictures,
http://www.flickr.com/photos/desmo57/ That's what I'm aiming for with mine. ;-)
Laters,
Mark