Just installed Mark Vernact's "Accelerator" module. It has to be the simplest mod for this bike and IMO it works. I installed the compact version. There is also an extended version that will allow you to mount an IAT sensor anywhere on the bike. Mark has a detailed description of how the module works on his website. The simple explanation is that it fools the ECU computer into thinking the temperature is cooler than it really is resulting in a richer fuel mixture. If the mixture is too lean you may get slight lag which results in a snatchy throttle response. By changing the mapping to eliminate too lean a mixture, it smooths out the throttle response throughout the entire range. This is especially useful in first gear on technical terrain. I am not yet convinced that it provides a noticeable difference in acceleration, although theoretically without lag it should, but I am convinced that is does provide smoother throttle response which IMO makes it well worth the cost. I don't know why after three years BMW has not chosen to incorporate this fix into the standard mapping. Maybe there is a software update that I am not aware of. I have not had an opportunity to test the module in hot weather. I would be interested to hear feedback as to how the module performs under extreme heat and if there are any issues.