XHP released the Max-performance feature
https://www.facebook.com/xhpflashtoo...fVeu4Ba67ZcgQl , this feature is already available for F85/F86.
I cannot compare the difference before this feature was released, because I installed the Stage 3 v1.2 (no custom settings) directly from the OEM setup. I knew the XHP from my other vehicles, so maybe I was expecting too much. Before install I was driving my F86 on D2, which was very satisfatory and gear changes lightning fast already while still very comfortable.
Now using the same D2 I feel with just less throttle the car wants to downshift more providing harder acceleration and I had to recalibrate slightly my right foot for a comfy ride. My car makes the OEM power and has less than 20K KM, I cannot state if the F86 installation was worth it or not comparing the F25 30D or E71M, in which cars the improvement was so huge and now I cannot imagine going back to the lazy stock TCU programm.