Well, I have been trying to find things about this bad boy for a long time, and it seems like no one messes with them because they are expensive and should never need replaced. I might replace mine, because I have a feeling when it goes bad, the engine makes weird noises from the bay.
2001 325i ZCW, ZPP
Titansilber Metallic, Black Interior
The 160,000 mile, clean daily driver