MoJo, ask your dealer to deactivate auto start/stop feature. My customer copy invoice reads....Reprogramed and encoded vehicle to switch auto start/stop to last user mode. SIB. 121512. My dealer kept the X1 overnite to run the program seems it was quite large (my thought)
I had a sales rep, mechanic and service rep, all tell me this fix would help minimize pedal lag time, for my X1 - I can truly say it has helped eliminate this situation. Also, remember there are other ways to help eliminate this issue as well, our brains, a split second of thought works quite well, our turbo's are not like down-draft carburetors.