BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > K&N Air Filter

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      03-15-2014, 02:04 PM   #1
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K&N Air Filter

My car's due for a service and also need to change the air filter.

Is it worth going for a K&N Air Filter, I know there won't be much difference (if any at all!) in performance, but for the extra 15-20 is it worth it?

Are they any better than the ones from EuroCarParts?
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      03-15-2014, 02:09 PM   #2
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Technically, with most K&N filters, they're wash and re-use. So yes, they're a bit more expensive, but you never really have to replace them again. Just buy the cleaning kit, which lasts forever, and you're done.

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      03-16-2014, 06:38 AM   #3
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I have installed one since 2011 (every car that I owned had a performance air filter). no difference in performance and you have to clean it every 5k-6k in order to maintain it in tip-top condition so consider this if you ll install one.
I also read that maf sensor will become dirtier with a performance filter but I didn't have any issues till now.
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      03-16-2014, 06:45 AM   #4
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If you want if for performance dont bother, if you want to know exactly why fire away.

I wouldnt use one on my car personally regardless of the reuse element.
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320d, air filter, e92, service

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