MWR are the tubes a ram air system under the front of the fairing
A kind of , a ram-air system is when the tubes are connected with a closed airbox .
I cut mine off
I placed a filter on the carbs and he wouldn't rev above 7500 RPM anymore.
I found out that when you ride the bike , you create a vacuum behind the fiaring and under the fuell tank.
You can find out for yourself , at one point of speed your key ring of your ignition key will bend over to the front in direction of your tacho
(I hope you understand what I mean)
So I made these plate and tubes to guide air to the filter ,and it helps (a lot