Quote:
Originally Posted by giggidy
Where is the noise generator? Can you take a pic?
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The actual generator is under the hood at the front of the engine bay. A black plastic box beside the air filter box. There is a tube that goes all the way to the firewall and into the cabin. Others in this thread have described where it exits. Passenger side footwell under the top of the carpet or in my*RHD model it's just below the steering column.
A vibrating diaphragm in the box is excited by the induction pressure as you accelerate to create the noise. Just like a*Kazoo (if you know what that is) or humming against paper wrapped over a comb. There are no gases or fumes passed through the pipe.
That is why it sounds nothing like a motor/exhaust but rather a vibrating piece of plastic!