Any know about K&N induction kit?

[Carlb328]

I saw this on a site from an ad on another forum and it's very affordable, and looks like a standard short intake. Does anyone know why it is called an induction kit? Or why it's cheap? Or what that extra hose in the pic is?

K&N 57i Performance Induction Kit p/n 57-0615

http://mazdatune.com/proddetail.asp?prod=K...615&cat=104