Passenger door exhaust?

[XIAIX]

For the life of me, I can't seem to find what this is. I've tried googling "4runner passenger side exit exhaust" and every variation of those words, yet no results.

What the heck is this? :

 

[XIAIX]

Nevermind... I eventually found it.

It's a Snorkel:
Is a snorkel for you? | Rock Creek Overland

A snorkel essentially raises the air intake inlet for your engine, and gets it as far away as possible from some of the elements that can and may cause expensive damage to your vehicle.

 

[JVC8790]

Nevermind... I eventually found it.

It's a Snorkel:
Is a snorkel for you? | Rock Creek Overland

Glad to see you figured it out, it's the intake for the car rather than the exhaust. It puts the point where the engine sucks in air higher so that if you are going through deeper water it lessens the risk of the engine sucking water up and then hydrolocking.

The exhaust in that case should still have enough pressure to push out any water that gets inside of it during deep water traversing.