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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Secondary boost control valve.



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      08-22-2020, 08:14 AM   #1
nomiS330d
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Secondary boost control valve.

I was looking at something unrelated and came across this. Iíve had the car over 3 years and never had a boost issue. Well, I think thatís what the valve is from googling the part number. Any ideas why somebody would do this?

It had the electrical connector connected but the vacuum pipes were as in the picture. Iíve found the pipe thatís plain black like the snapped off one on the valve which is sucking air in when the engines running so Iíve connected that back up. The blocked pipe with the orange stripe I canít find the other end where itís been cut from. Iím surprised the car ran absolutely fine considering it had a huge vacuum leak. Iím wondering if I should leave it as I found it or what?
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      08-22-2020, 08:41 AM   #2
nomiS330d
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It's not a boost controller. I've looked on realoem and found it's something to do with the inlet manifold vacuum control. Just baffled why it's been blocked and where the blocked pipe should go.
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