So if i got a CAI and got a duct to point at it...theoretically i will get minimal gains on top of having the CAI? I know that ram air won't give my car 10+ hp or anything. just 2-3 on top of the CAI would be cool. if not anything
well...you probably wouldnt get any gains (it would be extremely minimal) because of the way SRI
filters are. the filters will basically 'block' air from being forced into it too quickly if only a 'windpipe' is directed to it.
you would need to make the windpipe in such a way that it attaches to the filter where no air can escape to take advantage of ram-air (which is why many ram-air filters are flat and rest along all edges of the ram-air).
if air isnt allowed to escape, then your filter would be forced to take the extra air and you would experience some gains (it would still be slight anyway..maybe 1-3 whp gain)