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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Air Filter for the D



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      09-17-2012, 05:18 PM   #1
GreekboyD
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Air Filter for the D

$102 from the dealer for an OEM.

WTF?!
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      09-17-2012, 06:31 PM   #2
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Inflated prices in Canada, eh?

According to one of my favorite mail order suppliers http://www.rmeuropean.com

It lists for $54 and they sell for $33 US.
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      09-17-2012, 06:42 PM   #3
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Quote:
Originally Posted by GreekboyD
$102 from the dealer for an OEM.

WTF?!
Get K&N from Mike or Terry. Lolz at dealer prices.
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      09-17-2012, 07:24 PM   #4
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Some people have said the K&N is not good for our Ds?

Thanks for the link kbsilver.
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      09-17-2012, 07:38 PM   #5
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Quote:
Originally Posted by GreekboyD View Post
Some people have said the K&N is not good for our Ds?

Thanks for the link kbsilver.
Me no likey K&N, google Spicer drop-in filter test.
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      09-17-2012, 07:44 PM   #6
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I use K&N in my D. The X5D filter is as thick as the brick and extremely restrictive. Not sure if the same in E90.
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      09-17-2012, 10:07 PM   #7
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Quote:
Originally Posted by NRG View Post
I use K&N in my D. The X5D filter is as thick as the brick and extremely restrictive. Not sure if the same in E90.
Here is some real data: http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm

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      09-17-2012, 10:16 PM   #8
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Autozone sells them for $39-42 I believe. They have to be a special order though.
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      09-17-2012, 11:42 PM   #9
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Quote:
Originally Posted by Pierre Louis
Quote:
Originally Posted by NRG View Post
I use K&N in my D. The X5D filter is as thick as the brick and extremely restrictive. Not sure if the same in E90.
Here is some real data: http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm

PL
I've read that before, I'm aware. But the fact that my truck runs higher then stock boost settings with remap I'm aware as well. X5D stock filter is double layered paper+cotton ( sort of) I've tried blowing air through it with air gun vs K&N and results were obvious, K&N allows noticeably more air through. I'm not saying it's the best drop in out there simply flows better then stock X5Ds.
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      09-17-2012, 11:44 PM   #10
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Quote:
Originally Posted by MonkUSMC
Autozone sells them for $39-42 I believe. They have to be a special order though.
That's where I got mine for the X. E90 you can also get from BMS.
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      09-18-2012, 03:16 AM   #11
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Quote:
Originally Posted by NRG View Post
I've read that before, I'm aware. But the fact that my truck runs higher then stock boost settings with remap I'm aware as well. X5D stock filter is double layered paper+cotton ( sort of) I've tried blowing air through it with air gun vs K&N and results were obvious, K&N allows noticeably more air through. I'm not saying it's the best drop in out there simply flows better then stock X5Ds.
No doubt. Just doesn't filter...

I have the same debate with the AC guy about pollen filters.

Engineering is all about compromise, but the data shows there is little compromise in stock filters and the extra flow is unnecessary.

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      09-18-2012, 07:39 AM   #12
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I guess it does not filter dirt as well as the stock. I usually clean and recharge it every 5-6k miles. And it's pretty it's very dirty at that time during the summer months.
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      09-18-2012, 08:52 AM   #13
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By my experience with K&N filter was that the oil ran thru the tubing and damaged the MAS FLOW sensor filament, wont use again instead AMSOIL filter but the cone filer is to long &" and we need one that can be no longer than 6"
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      01-13-2014, 10:19 PM   #14
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So how often should the air filter be replaced in our 335d vehicles?
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      01-15-2014, 09:55 PM   #15
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Every other oil change
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      01-16-2014, 06:18 AM   #16
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it says it in the manual check air filter and replace it!! after every oil change
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      01-16-2014, 06:21 AM   #17
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Quote:
Originally Posted by Puerto Rican 335d View Post
it says it in the manual check air filter and replace it!! after every oil change
Really? Good to know. The service interval doc states every other oil change for diesel and every third for petrol...intesting that there would be a conflict.

Greek, FYI, the filter I'm using that you asked about is the AEM 21-205DK (4"inlet x 5"element DryFlow). you will need some gas meting material or rubber to get the fitment just right on the MAF pipe. Heck, with your CN filter prices, I'd just order two so that you can change them out each time you go to clean one of them with no down time while you wait for it to dry.
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      01-16-2014, 07:20 AM   #18
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Rotor I will get my car back today after 7 day vacation at the stealership and I will look it up for you I might be wrong but I read something towards what you stated ok
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      01-16-2014, 10:35 AM   #19
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NAPA carries or can order the MANN filters from Germany who is the BMW OEM Supplier.

Car Quest Auto Parts is part of World Pac and they too can get you all the German/European manufacturers for the OEM parts.
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      01-16-2014, 04:19 PM   #20
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just replace it when its dirty...? If you live in a location where there is a lot of dirt/junk in the air you will need to replace it more often than someone who lives in an area where there is very little junk in the air. An arbitrary timeline like every oil change or two is good for dealers who do everything strictly on a timeline, but it doesnt really apply if you are capable of making the judgement on your own
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      01-25-2014, 09:25 AM   #21
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Quote:
Originally Posted by Hoooper View Post
just replace it when its dirty...? If you live in a location where there is a lot of dirt/junk in the air you will need to replace it more often than someone who lives in an area where there is very little junk in the air. An arbitrary timeline like every oil change or two is good for dealers who do everything strictly on a timeline, but it doesnt really apply if you are capable of making the judgement on your own
This
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      01-25-2014, 10:09 AM   #22
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I have had the K&N filter installed on my car for 30,000 kilometers with no issues.
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