Three things.
1. The bikes ECU compensates for air flow and adjusts the Air/ Fuel ratio automatically, otherwise you could not ride your bike from sea level to the top of Pikes Peak with out a bad running engine. ECU controlled engine management maintains a controlled F/A condition regardless...
The Wunderlich windshield deflector and Memphis Shades fork deflectors are very similar to what is used very successfully on HD Road Kings and the like. I have owned 4 HD's in the last 7 years, '06 EG Classic, '13 and '14 Road Kings and a '18 Softail Classic 114. the deflectors, called Fangs...
Ape Hangers on a BMW, even though they show them on an R1800..................................IMHO, totally blasphemous :rolleyes:
Talk about ruining the handling.
I had the #2 BMW K 1600GT in the US, loved it, Would happily cruise at 140 on the GPS on a road I traveled a lot thru Nevada, Caliente thru Rachel to Tonapah, 211 miles. Had a full Remus, great bike.