So I've noticed there's a random hose in my car that's not really attached to anything and I can't really tell where it leads or where the loose end may have been attached. It appears to be zip-tied to the right of the engine and located to the left of the stock cold-air scoop. Is there some sort of diagram of the engine bay which can help me identify this hose?

I think you're talking about the breathing hose, it shouldn't be attached to anything. I also think there is something about this in the stickies.

Ah, thanks, sorry about that. I just found it in the stickies. But does anyone know if such a diagram exists anyway? Just for future reference?

For everyone with a CAI ... there are 4 hoses connected to the stock intake, but when you install the CAI you only plug in 3 ... is this the same hose?