Anyone have experience with the Dorch 2.5 on N55 car? I just upgraded from a Dorch stage 1 and notice the rail pressure is oscillating and getting out of control. I flashed my custom tune with the settings for Dorch stage 2, as Dorch tech support advised. I didn't have the oscillations at this exact power level with my DS1. Guessing settings for HPFP control need updating in the tune. I am still on the stock 2015 535i xdrive LPFP and think I would have had this problem on DS1 if LPFP was having trouble. Thank you for any advice.