So tody I bought a used K&N filter for my 02 WRX and as I was looking under the hood to check its figment, I noticed on of my vacuummnlines was broken in half. I duct taped the two pieces back together and drove it home. Now after looking online for replacement hose I realize that its the same vacuum line that's supposed to have this thing called a restrictor pill joining the two lines together??? What does it do and where can I get a new treplacment? Should I be worried that its been missing for who knows how long? Thanks in advance.