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      07-06-2012, 03:07 PM   #1
E92///M3
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Best Performance Air Filter?

Not intake system, but I heard that BMC is the best and most expensive with it's F1 oriented features. Are there better and more expensive filters? Which one?
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      07-06-2012, 03:13 PM   #2
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oh boy...get ready for some very positive feedback lol



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      07-06-2012, 04:10 PM   #3
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Almost bought a Afe but heard great things from AA and BMC. Can't wait to see the responses
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      07-06-2012, 04:24 PM   #4
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So this makes the 3,992,188th thread on this subject...wow
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      07-06-2012, 04:53 PM   #5
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Quote:
Originally Posted by E92///M3 View Post
Not intake system, but I heard that BMC is the best and most expensive with it's F1 oriented features. Are there better and more expensive filters? Which one?
Active Autowerke, aFe, BMC, Macht Schnell. All good.
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      07-06-2012, 05:04 PM   #6
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Quote:
Originally Posted by OerdingE93 View Post
oh boy...get ready for some very positive feedback lol



heard APC was making some pretty good stuff lately...
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      07-06-2012, 05:32 PM   #7
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aFe here with no issues.
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      07-06-2012, 05:54 PM   #8
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Lots of info in the forum. I have AA myself. Great quality.
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      07-06-2012, 07:02 PM   #9
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Happy with my Macht Schnell. Would be difficult to go wrong on this one OP..
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      07-06-2012, 07:32 PM   #10
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Oh here we go with the higher than mighty thread police, can't there just be good people willing to help someone new, assholes
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      07-06-2012, 08:07 PM   #11
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They all suck. (I'm also posting this on a vacuum forum that I'm fond of)
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      07-06-2012, 08:12 PM   #12
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I did a lot of research on this and there is a tradeoff between letting in more air vs letting in more dirt; AFE dry and Macht Schell oiled gauze have the highest filtration efficiency rating that we know of (~99%, albeit according to their own tests) vs the stock filter (which is 99.1% efficient). I personally went with the Macht Schnell as it has more airflow vs AFE dry. The latter I believe has a slightly higher filtration efficiency rating. Macht-Schnell (made by S&B filters under private label) AFE, and K&N are the only manufacturers that I found give any indication of filtration efficiency. S&B's website (which sells filters for trucks/diesels) has some pretty interesting tests vs. competitors.

Last edited by FogCityM3; 07-06-2012 at 08:23 PM. Reason: add
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      07-06-2012, 08:18 PM   #13
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any good aftermarket brand is good
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      07-06-2012, 08:27 PM   #14
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Us a@@holes would be glad to help if this subject hadnt been beaten more times than a $2 ho
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      07-06-2012, 10:59 PM   #15
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OP, like many of the members have said, this topic has been mentioned too many times. It's like asking someone, which color is the "best" M3. If you ask 10 people, you're probably going to get 10 different answers. If you do a search for drop in filter, you're going to find many of the old threads on this forum. Here's an example:

http://www.m3post.com/forums/showthr...ht=drop+filter

GL with your search.
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      07-07-2012, 09:08 AM   #16
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Quote:
Originally Posted by LM3 View Post
Happy with my Macht Schnell. Would be difficult to go wrong on this one OP..
What he said!
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      07-07-2012, 09:33 AM   #17
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I heard that you can shave fifteen seconds off the M3 Nurburgring time with a better filter. Seams like a know brainer.
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      07-07-2012, 09:40 AM   #18
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Active FTW!
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      07-07-2012, 09:55 AM   #19
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Fram air filter.
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      07-08-2012, 11:52 AM   #20
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AA green here, very good
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      07-08-2012, 02:00 PM   #21
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AA Green is giving me a little more induction roar than my stock filter, no noticeable performance gain.
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      07-08-2012, 02:59 PM   #22
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I'm very happy with my Macht Schnell. + the sound is awesome too
^^


See my review here: http://www.m3post.com/forums/showthread.php?t=681253
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