E90Post
 


Coby Wheel
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Anyone know the K&N Air Filter part number replacement for the e90



Reply
 
Thread Tools Search this Thread
      10-23-2005, 08:51 PM   #1
tiga901
Second Lieutenant
tiga901's Avatar
7
Rep
244
Posts

Drives: e90 330i, mt pp sp
Join Date: Sep 2005
Location: Millbrae, CA

iTrader: (0)

Anyone know the K&N Air Filter part number replacement for the e90

Thanks in advance for the help!
Appreciate 0
      10-23-2005, 09:10 PM   #2
ase2dais
//Mdicted
ase2dais's Avatar
United_States
346
Rep
9,988
Posts

Drives: a Cop Magnet
Join Date: Sep 2005
Location: 495 Ring

iTrader: (18)

Garage List
the information i gather from other forum mbrs is that E90 engine is too new and its not available yet. the site, last i saw, did not have the option for 2006. My voice mail messages wasnt return also.

good luck, inform us is get any further than us!
Appreciate 0
      10-23-2005, 11:07 PM   #3
tiga901
Second Lieutenant
tiga901's Avatar
7
Rep
244
Posts

Drives: e90 330i, mt pp sp
Join Date: Sep 2005
Location: Millbrae, CA

iTrader: (0)

Thanks...will do.
Appreciate 0
      10-24-2005, 03:49 PM   #4
lwongveros
Enlisted Member
1
Rep
44
Posts

Drives: E90 325i
Join Date: Oct 2005
Location: Madrid

iTrader: (0)

I too looked for this info about a month ago (and couldn't find a specific filter for the E90), but after reading reviews on the K&N filters, I think I'll stay away from them for now. From what I could ascertain, the way it increases the airflow into the system is by allowing more air to pass through the filter and thus much more potentially damaging dirt/pollutants into the engine. There was a study done that compared many different brands of air filters, didn't give me any confidence at all!!
Appreciate 0
      10-24-2005, 04:16 PM   #5
underDAWG
Second Lieutenant
30
Rep
278
Posts

Drives: E30 on Stands
Join Date: Oct 2005
Location: First State

iTrader: (0)

Quote:
Originally Posted by tiga901
Anyone know the K&N Air Filter part number replacement for the e90
Why? Why do you want mess up an ultimate driving machine with a piece of junk. If you want to increase the air flow, you can achieve the same thing by using your significant other's used panty hose wrap around the air intake. Don't fall for the KN Advertisement hype. If the auto manufactures think this will work, they already jump in there with two feet.
Appreciate 0
      10-24-2005, 04:34 PM   #6
webcoll
Enlisted Member
webcoll's Avatar
5
Rep
30
Posts

Drives: 320d SE
Join Date: Jul 2005
Location: UK

iTrader: (0)

I had a K&N replacement filter fitted to my E46 320d and it ran without any problems at all.

I fitted it when the car had reached 19000 miles (first oil service). I was astounded at how dirty the OEM filter was and my dealer said that it wouldn't be replaced until 60000 miles! The engine would be starved of air by then. My neighbour has an E46 330i Clubsport and has found the same amount of dirt at 15000 miles.

I don't know if it was the K&N filter or just the fact that I replaced the dirty filter, but performance did improve and my fuel consumption improved by about 10% as a result . From our experience, if you want to maintain max airflow, replace your filter more regularly than the service schedule recommends i.e. at the first oil service.
__________________
E90 320d SE, Steptronic, Sports suspension, 158s, poplar, Anthracite/cloth leather, Jet Black
Appreciate 0
      10-25-2005, 10:43 AM   #7
ase2dais
//Mdicted
ase2dais's Avatar
United_States
346
Rep
9,988
Posts

Drives: a Cop Magnet
Join Date: Sep 2005
Location: 495 Ring

iTrader: (18)

Garage List
Im happy to hear this, i cant wait to get those filters for mine. It was suggested to me by a 645ci owner, having said that Im sure he knows what he is talking about just like you.

Last edited by ase2dais; 10-25-2005 at 11:37 AM..
Appreciate 0
      10-25-2005, 10:47 AM   #8
ase2dais
//Mdicted
ase2dais's Avatar
United_States
346
Rep
9,988
Posts

Drives: a Cop Magnet
Join Date: Sep 2005
Location: 495 Ring

iTrader: (18)

Garage List
Quote:
Originally Posted by lwongveros
There was a study done that compared many different brands of air filters, didn't give me any confidence at all!!
Can you point me to that link/reference/article about the study?
Appreciate 0
      10-25-2005, 11:22 AM   #9
ben1364
Captain
14
Rep
940
Posts

Drives: E90 330iA
Join Date: Aug 2005
Location: Georgetown, TX

iTrader: (0)

I advise against the oil wetted air filters (like K & N) for street cars. They provide less effective filtration and the oil can coat and render ineffective the MAF which is an expensive part. Such filters increase the noise level somewhat and many mistake the increased noise with increased power.
Appreciate 0
      10-25-2005, 11:39 AM   #10
ase2dais
//Mdicted
ase2dais's Avatar
United_States
346
Rep
9,988
Posts

Drives: a Cop Magnet
Join Date: Sep 2005
Location: 495 Ring

iTrader: (18)

Garage List
Quote:
Originally Posted by ben1364
I advise against the oil wetted air filters (like K & N) for street cars. They provide less effective filtration and the oil can coat and render ineffective the MAF which is an expensive part. Such filters increase the noise level somewhat and many mistake the increased noise with increased power.
I dont thnk I will ever go that route, just the sound of "oil wetted" starts to scare the living sh*t out of me. thks though!
Appreciate 0
      10-25-2005, 12:00 PM   #11
underDAWG
Second Lieutenant
30
Rep
278
Posts

Drives: E30 on Stands
Join Date: Oct 2005
Location: First State

iTrader: (0)

Quote:
Originally Posted by ase2dais
It was suggested to me by a 645ci owner, having said that Im sure he knows what he is talking about just like you.
This has to be my all time favorite quote.
Appreciate 0
      10-25-2005, 12:35 PM   #12
ase2dais
//Mdicted
ase2dais's Avatar
United_States
346
Rep
9,988
Posts

Drives: a Cop Magnet
Join Date: Sep 2005
Location: 495 Ring

iTrader: (18)

Garage List
My 325i when she grows up wants to be a 645ci, lolz
Appreciate 0
      10-26-2005, 01:46 AM   #13
webcoll
Enlisted Member
webcoll's Avatar
5
Rep
30
Posts

Drives: 320d SE
Join Date: Jul 2005
Location: UK

iTrader: (0)

Quote:
Originally Posted by ase2dais
I dont thnk I will ever go that route, just the sound of "oil wetted" starts to scare the living sh*t out of me. thks though!
I ran with the K&N filter fitted for 25000 miles without any MAF problems and I know of others also without any problems. Advice I was given from contacts in the motor sport business suggested that oil wetted filters can be a problem if after cleaning the filter at a later stage the owner over oils the element. Providing you don't over oil it you shouldn't have any problems.

Regarding the noise - I've fitted K&N filters to all my BMWs (320 diesels, 320i and 330i) and have not detected any increase in noise. The replacement filters remain enclosed in the OEM filter /airbox housing! If you fit an induction kit then yes, the noise is increased significantly (not a good idea in my opinion). It spoils the character of the car!
__________________
E90 320d SE, Steptronic, Sports suspension, 158s, poplar, Anthracite/cloth leather, Jet Black
Appreciate 0
      10-26-2005, 04:15 AM   #14
E90Fleet
Lieutenant General
South Africa
1309
Rep
10,185
Posts

Drives: BMW
Join Date: Apr 2005
Location: South Africa

iTrader: (0)

The MAF problem seems do depend on the design

I personally know 5 E39 540i and M5's ( they use the same model MAF) that had to have their MAF replaced because the engines started running at half power due to contamination from K&N Filters after a few thousand miles. You can read up on the problem on www.m5board.com where there are hundreds of such cases. You have to replace it, cleaning doesnt work and a new one costs $$$$$$.


But then on the E46 you never hear of such problems, so its related to the MAF design


Now who is going to go and test the E90's MAF to see if it likes K&N type filters or not ???
Appreciate 0
      10-27-2005, 09:24 AM   #15
ben1364
Captain
14
Rep
940
Posts

Drives: E90 330iA
Join Date: Aug 2005
Location: Georgetown, TX

iTrader: (0)

E90 Fleet wrote in part, "Now who is going to go and test the E90's MAF to see if it likes K&N type filters or not ???"
__________________________________________________ __
I will not do so. I see no advantage in replacing the treated, pleated paper filter with 1940s technology on a street engine. When I first started noticing the return of oil wetted filters, the pitch from the marketers was, as I recall, that they would save money since they could be cleaned and re-oiled. More recently, the pitch is that they pass more air.
Appreciate 0
      10-27-2005, 05:13 PM   #16
webcoll
Enlisted Member
webcoll's Avatar
5
Rep
30
Posts

Drives: 320d SE
Join Date: Jul 2005
Location: UK

iTrader: (0)

You could be right about it affecting certain applications.

Today I managed to speak to a guy who works for the same company as me who I know fitted a replacement K&N filter to his 530i which he bought new 6 months ago. He says he's not had any problems so far but also hasn't noticed any benefits either!

I presume the MAF fitted to his car will be the same as that fitted to my E46 330i which ran without problems.

Clearly it pays to err on the side of caution here. Staying with OEM parts is often the safest thing to do. However MAF failures have been fairly common here in the UK with the standard OEM filter fitted particularly on diesels so I'm not sure what's going on!
__________________
E90 320d SE, Steptronic, Sports suspension, 158s, poplar, Anthracite/cloth leather, Jet Black
Appreciate 0
      10-27-2005, 05:54 PM   #17
Sho
Lieutenant
Sho's Avatar
35
Rep
574
Posts

Drives: E90 325i 6-speed
Join Date: May 2005
Location: WA

iTrader: (0)

I just hope to fit an Euro Air intake to my US 325i. Regardless in performance, the design has better taste.
Appreciate 0
      10-30-2005, 06:25 AM   #18
ben1364
Captain
14
Rep
940
Posts

Drives: E90 330iA
Join Date: Aug 2005
Location: Georgetown, TX

iTrader: (0)

webcoll wrote in part, "...Clearly it pays to err on the side of caution here. Staying with OEM parts is often the safest thing to do. However MAF failures have been fairly common here in the UK with the standard OEM filter fitted particularly on diesels so I'm not sure what's going on."
________________________
While I can see possible benefits from less restricted air flow on a race engine that is tuned for it, I see no advantage on a street engine. I agree with webcoll that oem parts or similar are usually safer than experimenting.
Appreciate 0
      11-15-2005, 03:56 PM   #19
RedFireBeemer
Enlisted Member
10
Rep
48
Posts

Drives: 2006 Red 330i
Join Date: Jun 2005
Location: California

iTrader: (0)

I just got an e-mail directly from K&N which said they now have a drop in replacement air filter for our cars. Check out this link. http://www.knfilterchargers.com/sear...x?Prod=33-2332
__________________
2006 Electric Red 330i
Beige Leather Interior
Sport Performance Package
Premium Package
Steptronic
Xenon Lights
Park Distance Control
Appreciate 0
      11-15-2005, 10:25 PM   #20
tiga901
Second Lieutenant
tiga901's Avatar
7
Rep
244
Posts

Drives: e90 330i, mt pp sp
Join Date: Sep 2005
Location: Millbrae, CA

iTrader: (0)

Thanks!
Appreciate 0
      11-21-2005, 03:57 PM   #21
j28s
Private First Class
17
Rep
156
Posts

Drives: 2008 335i - 6mt - Sedan
Join Date: Oct 2005
Location: US

iTrader: (0)

Does anyone know where to get the new K&N Air Filter (33-2332)? From what I can tell, it is too new and know one has them yet.
Appreciate 0
      11-21-2005, 05:53 PM   #22
dmooreco
Private
United_States
3
Rep
62
Posts

Drives: X3
Join Date: Sep 2005
Location: CO

iTrader: (0)

www.summitracing.com

$46
__________________
2009 335i xDrive/Le Mans Blue/M-Sport/Prem/Nav/HD/Sat/Alum
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:13 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST