[Edris335i]

I recently changed all of my vacuum lines to the platinum cured silicone ones. While changing them, I changed the two under the engine cover, the vacuum pump lines, as well. I didn't realize there was a difference until I saw a YouTube video a couple of days ago. Should I order new vacuum pump lines and take off the silicone vacuum hose? Any chance this could cause an underboost code as well? Any help is appreciated

Edit: Added pictures of the parts

[Edris335i]

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[Bimmer_Engineer]

Originally Posted by Edris335i

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Most people seem to be using silicone hose for all of it. I would wait and replace only if you get a leak...

[Edris335i]

Originally Posted by Bimmer_Engineer

Most people seem to be using silicone hose for all of it. I would wait and replace only if you get a leak...

I do have a boost leak, not sure if it's from this or not though. Seems to be holding vacuum cause there is vacuum when I remove the hose that is next to the oil filter but wasn't sure if this was okay to do or not.

[Edris335i]

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[Edris335i]

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[Bimmer_Engineer]

Originally Posted by Edris335i

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I’m not quite sure what you’re looking for. If you use the search function you’ll find numerous members who have replaced all of their stock vacuum lines with silicone.

This is the first time I’ve seen anyone mention this part.

[whyzee125]

Im not sure what your issue is. Are you asking because you developed a boost leak? If it developed at the time you replaced your lines, you probably didn't get one on there well or cracked a nipple.

Lots of people replace the hard lines under the valve cover with no reported issues.

[Socket]

If you fitted new hoses and then had a lost of boost, its no coincidence

Boost leaks are common, the get brittle over time and need replacing eventually

It is better to replace them all rather then one here and there, its an easy DIY