If this truly is a problem with these models, I'm assuming that my Dinan software is preventing me from having the same issue? I have immediate response. It's a rocket!
Current: 2014 BMW M6 Saphire Black, Eisenmann Race Exhaust (axle-back)
Previous: 2011 BMW 550i M-Sport, Carbon Black, Dinan Stage 3, Meisterschaft GTC Exhaust