NT, I drove around for a few days with it out, and there is definitely a noticeable increase in road noise, combined with noise from the compressor and air suspension when it was doing its thing (air whooshing around from the air tank etc).
I didn't have the floor in, and I imagine that alone would alleviate the noise somewhat. Replacing the foam tray makes a significant difference. that's why I decided to do that and work the storage around it.

