Although it's ghetto, this is what I was thinking. You wouldn't even have to completely cover the filter, as long as half was covered for rain
air filter heat shield DIY (All Years)
Sorry, missed that post.
Yeah, right idea except I think I'll go to Walmart (or the thrift store) and just buy an aluminum pot and cut the bottom out in a similar fashion. I think the dimensions would be such that the bottom of the pot just fits the wider part of the filter. Straight sides...which make for less restriction to all the surface area of the element.
A few guys are saying that rain doesn't have an adverse effect, and I believe that. The slight amount of actual water that gets through the element probably doesn't do much. It would have to get splashed pretty hard.
At this point I'm not really concerned with rain water that the intake might vacuum in....but instead big splashes and the near-muddy water that you get thrown at you when behind a truck that has nothing to do with engine vacuum.
On the other hand, I do like the idea of drawing 100% of the engine air from outside the fairing, and also protecting it from the road dirt and grime that will embedded itself in the forward facing half of the filter.
There is no way to convince me this stuff isn't there because I wash my car/truck and it's always stuck...especially in front...and it takes some elbow grease to get it off.
That said, I don't think it needs a "scoop", but protecting the sides from road dirt, splashes, and irregular amounts of engine heated air might be a plus, and I think open-ended would do that.
A scoop might be ascetically pleasing though, and I did like the idea of the swivel.... could be added I suppose.