Quick vid from last night. Note it sounds quite loud but really, inside the car when driving it's maybe 5-10% louder than stock. Phone camera was about 1m from the exhaust and the vacuum line is still in place (ie. no golf tee mod). I will take a similar vid from the same location of my mate's stock exhaust for a direct comparison. Also note this is an N55 rear muffler, which from my understanding is slightly different/louder than an N54.