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      11-13-2018, 10:36 AM   #9
Bimmer_Engineer
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Quote:
Originally Posted by E92 420 View Post
Nothings pressurised it’s under vacuum and no it won’t make a big difference at all.

Why do you think it will?
What are you talking about? The DVs attach to the charge pipe...the charge pipe is pressurized...if you put air filters on the bungs where the DVs are supposed to go then boost will leak out...
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