Finally here's the video of the '04 X5 4.4i with Magnaflow X-Pipe & Supersprint Exhaust.
Exhaust Specs:
Supersprint Exhaust with Flat Oval Tips (looks like the 4.6/4.8 tips)
Magnaflow 2.25" Inlet/Outlet X-Pipe
Sorry couldn't wait long enough to get the engine warmed up but raspiness goes away once the engine is at proper operating temperature.
http://video.google.com/videoplay?do...83261670&hl=en
Enjoy!
Here's a more detailed post by NCX with Video clips and photos of the Magnaflow X-Pipe install.
http://www.xoutpost.com/x5-e53-forum/...ht=x-pipe+pipe