Mixture richening by shifting the switching point of oxygen sensor has worked successfully on R1100s, R1150s, R1200s and F800s. The results reported in this thread have been consistent. Here is a good example from a rider of an R1100RT: Narrowband O2 Shift on R1100RT.
The Narrowband shift device will soon be announced for the R1150 series, and then when OEM connectors are available (soon we hope) for R1100, R1200 and F800. There will likely be a generic cable at a lower cost that can be tapped onto a stock O2 sensor.
Or you could purchase an innovate Motorsports LC-1 and adapt it as described here: Wideband Installation Overview/.