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BMW 3-Series (E90 E92) Forum
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Whoosh When Letting Off Accelerator
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08-31-2012, 08:15 AM | #1 |
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Whoosh When Letting Off Accelerator
So I've been having issues and I hate to start a new thread but perhaps this will be relevant to someone else when using the search function.
So I quadruple checked all my fittings and vac lines on the cold side and when going for a drive I get no codes. I can build a little boost, (Still have the boost issue and 30ff code) I'd say 5psi so when I am in boost and let off the gas peddle I hear a whoosh sound from the drivers side. I have the cowl and filter off for now so I hear a lot more in the engine bay.(Those injectors are loud as hell) So is that whoosh the dvs? It's only when letting off the gas when in boost. Any ideas? |
08-31-2012, 08:19 AM | #3 |
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With the cowl off the sound is much more pronounced.
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08-31-2012, 08:32 AM | #4 |
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So that sound is typical then and doesn't indicate a leak in the dvs?
I've done a boost leak test at 15psi from the hot side of the IC over and the dvs didn't make a peep so I'm guessing they're ok. They car seems to build the first 5psi of boost fine but when it tries going past that it throws the 30ff code. |
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08-31-2012, 09:11 AM | #5 |
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Are you hearing any sort of hiss or whoosh when you are building up to that 5 psi?
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