Are you supposed to remove the foam cover off a 320D air filter?

muffking · 02-05-2014, 03:56 AM

Hi Guys.
As title.

My existing air filter has a foam cover round the paper section of the filter, but the one that arrived comes off the filter. Should I leave it in place or will it reduce air flow?

Jase 320d · 03-20-2014, 03:38 PM

I also wondered why it has that stupid cover over it

Like a guaze or something.

Obviously it's ment to stay on but i don't understand why?
Every other paper filter i've used is just a paper filter without a guaze / woop cover thing?

To me the covering over the paper element is bound to reduce airflow

Please help someone as i like to know why

02-05-2014, 03:56 AM	#1
muffking Regular user 224 Rep 965 Posts Drives: F30 330D M-Sport Auto Join Date: Sep 2010 Location: Lincs. UK iTrader: (3) Garage List 2014 BMW 330D [0.00] 2006 Honda CBR1000R ... [0.00]	Are you supposed to remove the foam cover off a 320D air filter? Hi Guys. As title. My existing air filter has a foam cover round the paper section of the filter, but the one that arrived comes off the filter. Should I leave it in place or will it reduce air flow? __________________
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03-20-2014, 03:38 PM	#2
Jase 320d Wheelbarrow Edition 60 Rep 1,608 Posts Drives: Arctic 320d Join Date: Sep 2013 Location: Dumfries and Galloway iTrader: (1)	I also wondered why it has that stupid cover over it Like a guaze or something. Obviously it's ment to stay on but i don't understand why? Every other paper filter i've used is just a paper filter without a guaze / woop cover thing? To me the covering over the paper element is bound to reduce airflow Please help someone as i like to know why
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