quote from my dealer: . He said the answer he got from Germany is that this is a running production change and that there is no positive or negative effect on the way the car runs. They reassured me that no difference should be felt between a car with it and a car with out.
He also said the block off plate parts are available and will let me know when they arrive.
Current: 2013 M5 monte carlo blue
Past: 2012 E63, 2011 panamera turbo, 2010 E63, 2010 GTR, 2009 C63, 2008 M5