I have a 2012 MCS with the N18 engine and I've come across a problem I thought I had a few days ago and today it made itself apparent, when I left a red light today (car was under sport mode) I aggressively accelerated I heard a small pop and I lost turbo boost for a second and then a few seconds later it happened again, so I wanted to see if I could repeat the issue so when I was getting on the freeway I did the same thing, but this time there was no issue.
This is the first car with turbo that I have owned so I have no idea what is causing this.