Cabin Microfilter: with or without charcoal.
 

Hi guys,
I just replace my Cabin Microfilter a few days ago. I replaced a filter without charcoal because it is cheaper.

My question is: what is the difference between them, with or without charcoal?

The replaced microfilter was a charcoal filter. I know the charcoal can absorb the ordor, but I still smell the outside ordor all the time if I let the outside air flaws in. So, what is the benefit for me to pay almost twice the money for the charcoal microfilter?

with...of course

The main benefit of charcoal air filters that I know about are their odor eliminating properties. I would bet you are going to smell even more outside pollutants with the plain filter. I would have gone with the charcoal one personally.

You e70 guys have it rough though. Your micronfilters are about twice as much as us e53 guys from what I see. I can get an OEM Mann charcoal filter for under $30.

On a similar note, do our cars have recirculation filters under the dash like some other BMW's?

I don't think so. In the past 2 years, the technician only check things under the hood. I don't see any information on the internet talking about the filter you mention here.

Charcoal microfilter under $30? You kidding me. BMW dealer charges me $280 for
the charcoal one, that is why I paid $40 to buy an OEM plain microfilter.

I have being using this plain one for 3 days and don't feel anything different. May be I need more time to find out the truth.

Yeah, the e53 is much cheaper and only uses one filter whereas I am pretty sure the e70 takes two, right?

Was that price for installation as well? You are in Taiwan, right? Here in the U.S. you can buy a set of OEM charcoal microfilters for the e70 for about $120. Maybe cheaper than that at some places. Keep in mind I am stating OEM filters. Knock offs will be much cheaper.