Intake manifold parts ID, S5 NA

[RETed]

Originally Posted by sv51macross

-What is the electronic component the coolant passes through right next to the secondary fuel rail?

Non-turbo, right?
Most likely the ACV cluster - it's for emissions.

-Why is the coolant routed up to the throttle body? AWS?

Yes, it's the cold start system.
Through the use of a wax pellet (that melts), it bumps up idle speed by propping the throttle plates more open than normal at idle.


-Ted