This caught my eye and reminded me how poor the wind deflectors are.
I spent some time experimenting on a MGTF and came up with this:
which made a big difference.
One day I will try the same on the Zed to see the difference it makes.
The deflector in the video is plastic, I wonder what the noise level is with the fabric deflector, I'm sure my car's not as noisy as the one in the clip :|