It's easier to see if you take the plastic engine cover off. It'll be the little copper colored tube that runs along the top of the intake manifold. Then it turns into a hard line that bend around the drivers side. The 'soft' line you should be able to see looping up in the back of the engine bay.Why do you want to know?
18" Enkei's & Kumho Ecsta's-------UNICHIP Eibach Sport springs----------Morroso oil pan Injen CAI & Oil cap----------Stage 2 FI cams Custom Exhaust-----------TRD Supercharger AEM alt. pulley -------JSP Carbon Fiber hood 380cc injectors----DC Sports ceramic header