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      04-19-2009, 11:05 PM   #1
Buti_BMW
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AFE filter opinions....

Im thinking about installing the AFE filter into my e92 m3. What do any of you guys think? any opinions or suggestions? the AFE filter is priced at $88.00 . Your feedback will be appreciated.
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      04-20-2009, 12:37 AM   #2
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I had the AFE oiled and replaced it with the Macht Schnell. In retrospect, I should've just stuck with the AFE. It's a quality piece and the progressively finer gauze filters pretty well. I've heard stories of fitment issues, but I didn't see any of that. I think most fitment problems are caused by debris in the spring loaded filter holder. Good luck.
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      04-20-2009, 03:43 AM   #3
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I have an AFE intake, and no matter how many times i installed it, it still makes a slight rattling noise. So I purchased an AA filter, but i haven't had the chance to install it, probably do it tomorrow after my oil change.
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      04-22-2009, 09:33 AM   #4
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Originally Posted by Buti_BMW View Post
Im thinking about installing the AFE filter into my e92 m3. What do any of you guys think? any opinions or suggestions? the AFE filter is priced at $88.00 . Your feedback will be appreciated.
Many have been happy with the Macht Schell filters - you can see full details and plenty of installs at this thread: http://www.m3post.com/forums/showthread.php?t=227785
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      04-22-2009, 10:10 AM   #5
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Jesus, this is the third thread you've started about air filters. Just buy one already.
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      04-22-2009, 10:30 AM   #6
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I got the Macht Schnell but I got an email from a serious car mechanic warning against any low resistance filters especially oiled ones, saying they let through significant amount of particles and could harm the engine. Also warned the oil on the filter can sucked in and harm the engine. i am planning to clear this issue before install the filter.
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      04-22-2009, 10:47 AM   #7
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Originally Posted by attila View Post
I got the Macht Schnell but I got an email from a serious car mechanic warning against any low resistance filters especially oiled ones, saying they let through significant amount of particles and could harm the engine. Also warned the oil on the filter can sucked in and harm the engine. i am planning to clear this issue before install the filter.
This was true back in the 5.0L Mustang days from overoiling - K&N even has a technical bulletin on their website regarding this very issue.

This would be caused from overoiling, the oil would coat the HFM/MAF sensor wire and essentially ruin the sensor over time. Note that your filter would have to literally be dripping oil for this to happen.

Shake the dirt out every 5K miles and wash/re-oil ever 15K. Only use enough oil for the filter to change color and provide uniform coverage.

S65 engines do not have a HFM/MAF - you're perfectly fine.
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