Thread: 335d air filter
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      09-16-2012, 01:23 PM   #9
xs2man
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Drives: 2013 F11 530d M-Sport
Join Date: Jun 2012
Location: Scotland

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Quote:
Originally Posted by GreekboyD View Post
How often should we be replacing the air filters in the 335d?
I would imagine every service, so 2 years / 18k or whatever the schedule is.



Quote:
Originally Posted by NJ 1161 View Post
We are all talking replacement panel filters i take it?

Any one in the uk fitted or researched a cone filter and heat shield??
Dont know about in the UK, but here is a side by side test of performance filters and induction / cold air filters. Done in Oz right enough, but all compared against normal paper filters:




Based on their findings, I wouldn't waste my time on anything other than a normal filter. Ok, a performance panel doesn't need to be changed, but as they are only getting changed every service, you would need to keep the car 8 years or something to get your money back.
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