Hi all, I'm new to the forum, I have recently bought my first BMW. It's an E39 525 M57 M sport automatic in Imola red. I am planning on blanking the swirl flaps before I go an a bit of a road trip to the south of France and Spa! Do I have it remapped after removing them? Is the any noticable difference in performance? Can I do anything to protect the turbo with it being a 100k mile car? Thanks in advance and sorry if this is an age old question!