Air intake chambers/baffles

[MikeZ28]

GM loves to put baffles, dongles, and funky chambers on their air intakes, and from the engine pics I've seen it looks like the LS3/L99 are no exception. Anyone know what the "extra" chambers are on the passenger side of the intake elbow? And it looks like there is a hose running up to one of those chambers, anyone know what that is? The 4th gens had a small hose to feed air to the air pump, but I didn't think GM cars used air pumps anymore.

[Xanthos]

They're called resonator chambers. They slow down the air intake charge greatly without drastically (but still a little bit) reducing the amount of flow. The goal is to make it to where you can't hear the intake. Its one of those ridiculous things our society likes as a whole - like exhaust you can't hear at idle.
- Xanthos

[CTS]

Piping In a Little Engine Music

Development engineers have long recognized the role that sound plays in a driver’s impression of a car’s power and responsiveness. That is why acoustical experts are working with engineering teams to import just the right amount of mechanical and exhaust chatter into the passenger cabin — enough to give occupants some feedback, but not so much that it annoys them.