I think chivas is speaking about his particular X5's Previous Owner (not Original Poster!)
I am going to do my Vanos soon, and i will pick up my stuff from Biesan, Ive spoken with him on the phone, Great guy, lots of good advice!

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2003 X5 3.0i (02/2003) sport package, Sapphire black metallic / Black Dakota Sport seats. compass mirror retrofit, trailer hitch retrofit, Prodigy P2 trailer brake controller installed, PDC retrofit, Lumbar support retrofit. heated rear seats retrofitted. Running boards retrofitted and subwoofer install in progress. 4.8is Brakes installed front and back. Bluetooth TCU installed, Rear Fog lights installed. Retrofitted reclining rear seat backs.