When and why factory used dual snorkel?

In this case with this scoop I think it was about sales - not so much performance. Sure you'd get a little fresh air in there because at speed its obviously going to force some air through, but it wasn't sealed. The opening is pretty small too. They look cool and you don't really see them that often though. More so like a Duster "Twister" package or the Demon "Sizzler" package, its about sales, or so I think.