Dual Ram air

Would there be any advantages of having 2 ram air filters for 1 intake or would that be a disadvantage?

I read a pretty convincing article one time, i think it was in AF, about the myth of Ram Air. To paraphrase, the pressure increase caused by the ram air effect at 60 mph is only like 1 psi, which corresponded to only a 1% increase in power or something. Those numbers are prob wrong, but I remember that basically, the effect was negligable. The cold air intake philosophy works, but have dual ram air intake aren't really gonna help you if you already have one.

F1 cars gets a pressure increase of around 2 psi at 250 km/h, but then the intakes are also large.