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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 07-23-2013, 08:59 AM
worldsmart02 worldsmart02 is offline
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I need to change air filter for 2008 335xi should I stay with OEM or switch to K&N filter .
If I stay with OEM is tisher BMW is site to use for OEM parts . How many filters are needed to be changed


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  #2  
Old 07-23-2013, 09:04 AM
fdriller9 fdriller9 is online now
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You can go with a drop in such as K&N or aFe. Just go with a dry filter, not oiled. Unless you know how to properly maintain an oiled filter.

There is also the cabin filter to replace. Stick with oem for that one.

Check ecstuning.com for prices against Tischer. Sometimes, one or the other is cheaper.
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Old 07-23-2013, 09:57 AM
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thekurgan thekurgan is online now
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Stick with OEM filters, foam filters give you nothing but less filtration.

getbmwparts.com is pretty good, penskeparts.com sometimes matches prices as well.
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Old 07-23-2013, 10:22 AM
fdriller9 fdriller9 is online now
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Originally Posted by thekurgan View Post
Stick with OEM filters, foam filters give you nothing but less filtration.

getbmwparts.com is pretty good, penskeparts.com sometimes matches prices as well.
No one is talking about foam here.

I love my aFe oiled drop in. Better throttle response while maintaining the low end toque you lose with open, aftermarket intakes.
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  #5  
Old 07-23-2013, 10:48 AM
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thekurgan thekurgan is online now
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Originally Posted by fdriller9 View Post
No one is talking about foam here.

I love my aFe oiled drop in. Better throttle response while maintaining the low end toque you lose with open, aftermarket intakes.
Foam/cotton, neither filters as well as paper, all the gains, if any, are at WOT.
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Old 07-23-2013, 11:39 AM
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King 5 King 5 is offline
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Could always go with the Dual Cone Intake (DCI) from Burgertuning for $99


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  #7  
Old 07-23-2013, 07:56 PM
worldsmart02 worldsmart02 is offline
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I will stick with the OEM . Does any one know what kind of filter this is in the attached pic, searched owner's manual didn't find any. Is this a engine air filter and is that needed to be changed for the car art 40 k miles ?
Going to change this filter along with the cabin air-filter also.
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Last edited by worldsmart02; 07-23-2013 at 08:00 PM.
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Old 07-23-2013, 10:30 PM
Ilovemycar Ilovemycar is offline
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Quote:
Originally Posted by worldsmart02 View Post
I will stick with the OEM . Does any one know what kind of filter this is in the attached pic, searched owner's manual didn't find any. Is this a engine air filter and is that needed to be changed for the car art 40 k miles ?
Going to change this filter along with the cabin air-filter also.
That is your engine air filter, and I honestly cannot think of any easier maintenance, not even filling tires with air or changing wiper blades. Oh wait, filling windshield wiper fluid is a little easier, okay there is one thing. You just unclip all of those silver metal tabs and the cover pops right off. If you haven't been under there yet, don't be surprised to see some dead insects and stuff when you pull the filter off. Might as well wipe up the housing a little.

The long tray that is pictured at the very top of your photo is the cabin microfilter.

I will say that I do not know for certain what the recommended intervals are. For the microfilter, I mostly have read 2 years, but have also heard that it may have been changed to yearly. For the engine air filter, I have seen a mileage recommendation right around where you are at, but more often I see something like every so many oil changes, I think maybe three (which sorta jives with 45K miles, if you're the type to really wait until 15k to change your oil).

Of course go OEM. The microfilter is made by Mann and so some people pick that up at Amazon. I bought both at Tischer/getBMWparts, better pricing for me at least with the size of order I placed. As an aside, doesn't matter with filters, but for the various fluids I bought from multiple vendors, Tischer had the freshest. For instance, for time sensitive stuff like OEM brake fluid, the dealership's stock may have been a half year older (somewhat significant in this case).
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  #9  
Old 07-24-2013, 03:19 AM
worldsmart02 worldsmart02 is offline
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Re: Needs Parts For My Car

How are the Mann air filters compared to the OEM filters . BMW doesn't make filters wondering in Mann is supplying them also ...
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Last edited by worldsmart02; 07-25-2013 at 03:19 PM.
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