The exhaust on my 2001 Audi S8 separated between the catalytic converters and the mufflers, causing the mufflers to be bypassed. Here's a short video demonstrating the sound as I take a short drive to get it repaired.
Could you make a video showing where and how you did this? I plan to do exactly what you have done on my 2002 S8 because that noise is spectacular. Thank you for the video! @Eric Rechlin