With regards to the collaboration between Yamaha and Toyota, Yamaha designed the intake and resonators for the T-VIS system on AW11's. The article posted further up by Dwaine and the experience of Wiso relate to AW-11's which makes sense given that the intake was specially designed by Yamaha.
 
This is not the case with the 3S-GE, and as Boof has pointed out it is a fairly straight through design. Anecdotal reports for installing pod filters on 3S-GE's are mostly positive in contrast to AW-11's which are more negative.

Each car has its place - unfortunately with the media targeting imports, Silvias (at least here on the Gold Coast) are something you cannot drive anywhere without fear of being absolutely butt-raped, kind of why I got rid of mine. I originally got an s15, and it was absolutely beautiful - was well known as being one of the cleanest around, but even that had it's fair share of attention (legal as possible too!). When I wrote it off I ended up with an s13, and man that thing was a pig... I didn't drive it at all thanks to the stigma that was attached to them - hence why I got rid of it and ended up with the (as you said so well) gentleman I have today.


That is an unreal article - does a really good job at explaining the role that resonators have. Certainly learnt something from that, and it almost makes me want to stay with the stock intake. I think though I do have to still give a stainless intake a shot just to hear what kind of difference it makes. I think the ideal solution would be to have a stainless intake that kept the resonators, although I honestly don't know how you'd even implement something like that. Just a shame they're such ugly components in an engine bay =\