Fast Eddie's 02 T/A vert.

I installed my TSP Lid and K&N breather filter.I can hear he breather filter sucking air.I don't understand what that hose does,is it vacuum from the motor or some kind of emissions thing.Can someone explain what it's for,it sure sucks the air.Reminds me of a vacuum leak.

Thanks in advance.

VoodooWS6

It sends air to the air pump/tubes to help heat the cats before the car is completly up to opererating temp. It is strictly emissions related. Hope this helps