I replaced the CCV's on mine last night. took a total of 20 minutes and I Noticed an instant smoothing of the idle. No more white smoke when taking off from a stop.

The real test will be when I start her this morning after sitting all night. Hoping this solves my cold start misfire problem.

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Current Bimmer
2004 X5 4.4i Sterling Grey Sport/Premium

Past Bimmers
1991 318I Alpine White
1995 740I Alpine White
1991 525I Schwartz
1998 323IS Scwartz
2004 330CI Cabrio Titanium Silver Metallic
1995 540I Schwartz
2000 Z4 3.0 Titanium Silver
2000 330ci Coupe Titanium Silver