I was wondering what the name of the hose is that leads to the Air filter box (CAI). Its the small one that dissconnects from the filter box. How much would one be and are there any aftermarket ones?

ive heard alot of names for it: breather hose, vacuum hose. never heard of aftermarket ones, im pretty sure you can just get any length of custom tubing to fit it. if your trying to get a intake in, and you have the extra breather hose hanging around, k&n and some other filter companies have individual breather filters you can buy for i think $30-40 or so

That hose (on the stock airbox) would be the secondary air injection pump air hose. If it looks like an acordian that is. Most all aftermarket intakes come with a connection on the CAI pipe. I know that AEM and INJEN both do, but most ebay bs problably dont. And if this pipe is not connected correctly to the intake your check light will come on.