I'm ignoring the pitches. I've seen the other posts.

Here is another video of it revving up through the ranges. First up to about 2k, second a lot higher.

BMW X5 2004 4.4 185000km Revs - YouTube

It really doesn't sound bad when you are standing there, but get the phone mic in there and it sounds likes it's chewing itself up. Only on the passenger side of the engine though. Would be good to hear a few other recordings from similar vintage and mileaged 4.4's. Sit in the driver seat and you wouldn't have a clue .

Cheers.

__________________
Daily Drivers:
- 2008 535i, 320,000km
- 2004 X5 4.4, 01/2004 production, 420,000km
- 1997 328i, 350,000km

Track:
- 1996 328i, track/race car, ~300,000km

Winter:
- 2013 Ski-Doo MXZ X 800 E-TEC, trail can
- 2007 Ski-Doo MXZ Blizzard 800 HO
- 2001 Ski-Doo MXZ 600 w/800 engine, exhaust
- 1978 Ski-Doo Olympique 340 (vintage race sled)
- 1977 Ski-Doo Olympique 340E