This was a super easy mod. I had it now for appx. 6 months and there have been no issues and it does not throw any faults. The car just sounds bettter because now you can actually hear the fantastic sound of BMW inline-6. This is how it should have come from the factory. People should have an option of a bit sporty exhaust when their car comes with a sport package..........are you listening BMW
Those that do not want to hear the marvelous inline-6 singing probably would not even care for the harsher ride or greater effort steering feel that comes with the sports package.