French speaker needed - what's he saying?

[worldwidewebs]

Any French speakers able to explain what he's discussing here please?

https://www.facebook.com/reel/381504551296763

[worldwidewebs]

n1colas said:

The first bit is about the black plastic aero devices in front of each tires which have been fitted to avoid negative turbulences around the wheels/the wheel arches. The device is however also blocking the airflow to the front brakes….he suggests for track work you could therefore remove them, thus reducing brake temperatures (at the expense of compromising the aero).
The second bit is about the aluminium plates which appear to have been modified to allow for more airflow to the brakes. It is indeed not completely clear whether that is a standard part or a modified one.

Thank you. It was the first bit I was particularly interested in as I removed mine to aid brake cooling and I was hoping that that wasn't considered to be a bad idea!