A few notes before I forget:

1. When d/c the Vanos oil feed (19-mm wrench), since I kept the 2 washers, try to keep the 2 washers in the same orientation because they have distinct indentation from torquing the bolt. I use ZipLoc and rubber band to tie them together and also to keep debris out of the line.

2. In theory, you can do the CCV with the OFH in place, but it is 100x easier if you remove the OFH. Since both of these items (CCV and OFH Gasket) need to be done around 100K+, it is best to do both jobs together. Shooting 2 birds with one stone, so to speak.

3. During installation, the Vanos oil feed line hit the CCV pipe. I had to make minor adjustment to the Vanos oil feed line so it does not collide with the CCV pipe.

4. Clean the throttle body and the ICV since they are out of the car.

5. My DISA Valve looked fine at 116K.


Personally, I don't care for this M54 CCV shitty design and the time involved. I did it simply because I already bought the parts from BMW and perhaps wanted to keep the stock look.

Next time: I'd do the mod using standard hoses as outlined in BavarianE39 posts.

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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT