This is a quick video of a cold start, unfortunately the mic on my mobile phone sucks! So you will have to over-imagine a little bit.
Does it sounds like an ///M car? Hell yeah! And a cold start sounds very good too the first time I've been very surprised
Looking at the rev counter going up and down always makes me smirk and the noise of a cold start in a garage gives an another very good reason to have a garage! And a very good way to start a trip in a 1M....
Below a photo of the exhaust line. There were some people who were wondering if on the production cars the muffler would have the same look than on the pre-production cars. And yes it has. But I quite like how it looks, it give an handmade dedicated solid look! And maybe I'm wrong but I think all oem ///M exhaust always had a similar raw appearance. What do you think?