Where does this hose run to?

[S13FASTBACKSR]

can someone tell me where this hose runs to? i see it runs under the intake manifold i just need to know exactly what it runs to. I also got under the engine and saw it runs back by the oil filter and the block but cant see where it goes from there. so can anyone tell me? thanks a lot.

[slow s13]

that line has coolant running through it

[S13FASTBACKSR]

coolant? i was under the impression that it was a vacuum hose but i believe you..either way my initial question was where does it run to...anybody?

[ILikeMy240sx]

it goes to the collection of coolant lines under the intake manifold.

I believe it goes to the nipple on the hardline.

[compression]

It keeps your throttle body warm to prevent icing in some of the small passages that see really high air velocity.