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7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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Old 04-15-2017, 06:41 AM
bigv8rwd bigv8rwd is offline
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Location: Toronto, Canada
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Mein Auto: E60 745i, FG2 Civic Si
cone filter help

Hello folks,

So the air filter on my 2005 745i is du for a change, so I figured why not throw on a high quality cone filter for the sounds. The problem is I'm unsure of what the hose connecting to the front of the airbox actually does (pictured). Does it require vacuum built in the box? or just a little filter would do?

Anyone know what it does?
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Old 04-15-2017, 10:13 AM
FatBoy613 FatBoy613 is offline
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Mein Auto: 2004 745i
sorry for the stupid question, but can't you put the cone filter inside the box?
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Old 04-16-2017, 06:20 AM
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GeorgeT GeorgeT is offline
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Mein Auto: '07 750i BMW; '03 Z4 BMW
Originally Posted by bigv8rwd View Post
Anyone know what it does?
I suspect that it is #6: http://www.realoem.com/bmw/enUS/show...diagId=11_3280

Takes filtered air to the air pump.
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