Someone clue me in here.

When you open the sunroof, a small air deflector rises.

What is this deflector's purpose...

Tonight while driving home, I held the deflector down and not only did less air enter the car through the sunroof but it made much, much less noise overall...

Think take off power in a plane vs. cruise power regarding the noise difference...

I am trying to figure out how to disable this thing now as unless I am missing something it does much more harm than good...

Any thoughts here...IF youhave not tried it please do and let me know what you think.

Not checked for spelling-

it's supposed to deflect wind so there are less wind entering the car, that's all i can say. i don' tknow about 3gs, but on my gs400, it helps a lot (although noisy)

maybe your's is messed up somehow? on mine, if i hold it down while driving, it creates cabin pressure if other windows are not open. so much that it hurts my ears. the noise may not be as bad, but it think that may be due to where the air is flowing.

The deflector stops the build-up of ear-popping cabin pressure (in conjunction with the forward setting of the sliding roof), and by creating upwards airflow also deflects other stuff besides wind from entering the cabin, including light rain, bugs, dirt...etc.