If you are looking at your air box where the stock air filter is... look at the plastic tube running out of it towards the front of the car and then down into the wheel well right next to the battery... you can only see the upper corner of it from inside the hood....
Once you get it out from inside the wheel well it kind of looks like this big snorkel...
Try Clicking here.... it's from N-Body has some pics on the right hand side of the screen