This fixed my 30ff, underboost problem.
Thank you OP.
One of my lines in your picture had split. You couldn't see it from the outside because of the braiding. Replaced these two lines and the other two lines going to the round canisters with Silicone vacuum lines from Summit Racing. Used a xacto knife to cut the original lines, very careful, and removed them.
Cars running great now.
I have a May 2007 Build with 75k miles.
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'18 F80 M3 ZCP, Sakhir Orange - 11/17/18
'07 E90 335i, Montego Blue - Sold 9/28/18
'15 X5 Diesel, Mineral White - Current
'06 Honda S2000, Laguna Blue - Current
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