E90Post
 


E92 Lighting
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY: Charcoal filter removal



Reply
 
Thread Tools Search this Thread
      05-17-2010, 02:42 PM   #133
mahan518
New Member
0
Rep
5
Posts

Drives: 2006 330xi
Join Date: Dec 2009
Location: Philadelphia PA

iTrader: (0)

Just got done doing this install. Great DIY.
Appreciate 0
      06-13-2010, 04:29 PM   #134
mattsten
Private First Class
2
Rep
195
Posts

Drives: 2010 E90
Join Date: Mar 2010
Location: TN

iTrader: (3)

Quote:
Originally Posted by mahan518 View Post
Just got done doing this install. Great DIY.
Ditto. Definitely worth the work. Intake noise seems to be a bit louder now which I like. I bought a K&N but decided to stick with the oem filter as I know it will keep more dirt out of the engine.
Appreciate 0
      07-03-2010, 05:11 PM   #135
bimmergixxer
Second Lieutenant
bimmergixxer's Avatar
4
Rep
205
Posts

Drives: M3
Join Date: Nov 2009
Location: GTA

iTrader: (7)

Easy mod and quick. It is HOT out and all parts slid back in place like melted butter Going to a party and will try it out in a couple hours.
Appreciate 0
      07-26-2010, 11:37 PM   #136
777ER
Lieutenant
777ER's Avatar
United_States
10
Rep
561
Posts

Drives: 2007 328xi
Join Date: Jan 2007
Location: NY

iTrader: (2)

Send a message via AIM to 777ER
Just did this to my car and I have PBX in it which really show the charcoal filter delete mod really works.

Def a improvement in accelertion and fuel burn overall, esp WOT it pulls harder now.
Filled up my car and the 'miles of fuel to go' would start counting down from 345 miles, now it does it from 375.

Can't believe the charcoal filter was restricting the airflow so much it was like choking the engine.

I checked my wife's new 2010 Honda Accord EX-L V6 intake filter and box, there's no charcoal filter in there or anything close to that.
__________________
-Chris
2007 Montego Blue 328xi


Sedan | Poplar trim | Steptronic | Cold Package | Power front seats w/memory | Xenon Adaptive Headlights | PDC | 2008 Plate LED's | PBX | LUX v5.2
Appreciate 0
      09-06-2010, 08:08 PM   #137
mr.kobayashi
Enlisted Member
mr.kobayashi's Avatar
0
Rep
41
Posts

Drives: 2010, E90 LCI 328xi
Join Date: Aug 2010
Location: New Jersey

iTrader: (0)

Is there any advantage with the K&N vs OEM filter? I was also considering putting in an Euro Airbox instead of this delete. But it seems like that and the performance intake have almost zero effect/not worth it.

But did anyone notice charcoal remnants on the OEM filter after removal? My machine has 3500 miles on it, so it doesn't really need a new filter. I am thinking this mod would be even cheaper using the same OEM filter from original assembly etc.
Appreciate 0
      09-06-2010, 08:31 PM   #138
moto_noob
Private First Class
2
Rep
149
Posts

Drives: '06 e90 325i
Join Date: Jun 2009
Location: Louisiana

iTrader: (1)

yes you could just reuse the oem filter. but the k&n is reusable, clean and reuse. And i think the oem filter seems kind of cheaper.
Appreciate 0
      09-06-2010, 10:30 PM   #139
mr.kobayashi
Enlisted Member
mr.kobayashi's Avatar
0
Rep
41
Posts

Drives: 2010, E90 LCI 328xi
Join Date: Aug 2010
Location: New Jersey

iTrader: (0)

Thanks Moto. Think I'm gonna reuse the filter until I need a new one and save 50$.
Appreciate 0
      09-28-2010, 05:23 PM   #140
AllStock
Fvck JDM
United_States
8
Rep
476
Posts

Drives: e92
Join Date: Aug 2010
Location: Nowhere Near you

iTrader: (12)

Garage List
Sorry to ask a noobie question... I have 07 e92. There's a charcoal filter instead of the regular filter??

Also, where can I get the K&N filter for cheap? I'd really like to do this mod if I have the charcoal filter..

Thanks in advance..
Appreciate 0
      09-29-2010, 09:56 AM   #141
LloydJr
New Member
0
Rep
26
Posts

Drives: '06 325I E90
Join Date: Sep 2010
Location: Louisiana

iTrader: (0)

Ok, reading all this, I'm a bit confused. Are there two filters? - the ypical filter you find in any car and another charcoal filter for space-age tecnology filtering?. Is there a filter that needs replacing for maintenance beside the charcoal cut out?.
Appreciate 0
      09-29-2010, 06:36 PM   #142
777ER
Lieutenant
777ER's Avatar
United_States
10
Rep
561
Posts

Drives: 2007 328xi
Join Date: Jan 2007
Location: NY

iTrader: (2)

Send a message via AIM to 777ER
Quote:
Originally Posted by AllStock View Post
Sorry to ask a noobie question... I have 07 e92. There's a charcoal filter instead of the regular filter??

Also, where can I get the K&N filter for cheap? I'd really like to do this mod if I have the charcoal filter..

Thanks in advance..
There's a charcoal filter that's permanently attached to the upper airbox, and then there's a replaceable filter after that.

Works like this: Air goes into the airbox, then into the replaceable filter, then passes thru the charcoal filter, then into the engine.

The charcoal filter is there to capture backflow from the engine when it's shut down, ie fuel vapors or mist from the PCV system.

I don't know why it's worth putting it in there, even my wife's 2010 Accord V6 doesn't even have it.
__________________
-Chris
2007 Montego Blue 328xi


Sedan | Poplar trim | Steptronic | Cold Package | Power front seats w/memory | Xenon Adaptive Headlights | PDC | 2008 Plate LED's | PBX | LUX v5.2

Last edited by 777ER; 09-29-2010 at 10:23 PM.
Appreciate 0
      09-29-2010, 06:37 PM   #143
777ER
Lieutenant
777ER's Avatar
United_States
10
Rep
561
Posts

Drives: 2007 328xi
Join Date: Jan 2007
Location: NY

iTrader: (2)

Send a message via AIM to 777ER
Quote:
Originally Posted by LloydJr View Post
Ok, reading all this, I'm a bit confused. Are there two filters? - the ypical filter you find in any car and another charcoal filter for space-age tecnology filtering?. Is there a filter that needs replacing for maintenance beside the charcoal cut out?.
That is correct, there's basically 2 filters in there, one is replaceable, and one is not.
Appreciate 0
      09-29-2010, 08:37 PM   #144
ska///235i
***** noob
ska///235i's Avatar
United_States
482
Rep
10,280
Posts

Drives: 325xi>M235i>428GCx Mspor
Join Date: Sep 2005
Location: Boston

iTrader: (34)

Garage List
2006 325xi  [0.00]
No, regular air filter....then charcoal filter

Quote:
Originally Posted by 777ER View Post
There's a charcoal filter that's permanently attached to the lower airbox, and then there's a replaceable filter after that.

Works like this: Air goes into the airbox, then passes thru the charcoal filter, then into the replaceable filter, then into the engine.

The charcoal filter is there to capture backflow from the engine when it's shut down, ie fuel vapors or mist from the PCV system.

I don't know why it's worth putting it in there, even my wife's 2010 Accord V6 doesn't even have it.
__________________
2006 325xi (Sold)
2014 M235I (Current)
2015 428xi Gran Coupe (STB)
Appreciate 0
      09-29-2010, 10:24 PM   #145
777ER
Lieutenant
777ER's Avatar
United_States
10
Rep
561
Posts

Drives: 2007 328xi
Join Date: Jan 2007
Location: NY

iTrader: (2)

Send a message via AIM to 777ER
Quote:
Originally Posted by ska325xi View Post
No, regular air filter....then charcoal filter
My bad...corrected.
Appreciate 0
      09-29-2010, 11:42 PM   #146
AlanAZ
Captain
AlanAZ's Avatar
15
Rep
810
Posts

Drives: E90 325i sport manual
Join Date: Aug 2009
Location: Scottsdale, AZ

iTrader: (4)

Quote:
Just did this to my car and I have PBX in it which really show the charcoal filter delete mod really works.

Def a improvement in accelertion and fuel burn overall, esp WOT it pulls harder now....

Can't believe the charcoal filter was restricting the airflow so much it was like choking the engine.
Agreed. I replaced my filter with an oiled AFE, and it totally rocks. When I blip the throttle for downshifts, the RPMs go up immediately now, like on my previous E46. Before I had to plan ahead and give more gas. I think this is a must-do. Oh, and scoops help also - but there was more dirt in the airbox than without them, you just need to clean it and filter more often.
Appreciate 0
      10-05-2010, 12:11 PM   #147
LloydJr
New Member
0
Rep
26
Posts

Drives: '06 325I E90
Join Date: Sep 2010
Location: Louisiana

iTrader: (0)

Thanks Bro. I'm planning to knock it out this weekend.
Appreciate 0
      10-15-2010, 12:20 AM   #148
dirte90
Second Lieutenant
dirte90's Avatar
14
Rep
259
Posts

Drives: E90 328i
Join Date: Sep 2010
Location: SoCal

iTrader: (2)

Thanks for the nice DIY. I just knocked this out along with the intake silencer delete in about 25 minutes. If you take your time and pay attention it is VERY easy!
__________________
Appreciate 0
      10-17-2010, 10:07 AM   #149
dtc100
Lieutenant Colonel
20
Rep
1,523
Posts

Drives: 2011 E90 328i 6AT non-sport
Join Date: Sep 2010
Location: Norcal

iTrader: (0)

Quote:
Originally Posted by frdvshcy View Post
Thanks for the nice DIY. I just knocked this out along with the intake silencer delete in about 25 minutes. If you take your time and pay attention it is VERY easy!
The intake silencer delete seems a risk, I would find a good tube to replace the stock tube instead. Besides I don't see the silencer causes any air restriction.

After the charcoal filter removal, last night I took the car out for a test drive, it did sound a bit more aggressive.
Appreciate 0
      10-18-2010, 04:14 PM   #150
dtc100
Lieutenant Colonel
20
Rep
1,523
Posts

Drives: 2011 E90 328i 6AT non-sport
Join Date: Sep 2010
Location: Norcal

iTrader: (0)

BTW, after looking at the BMW Performance Intake pictures, it looked not too different than the stock intake box other than one opens on the top, the other splits open.

Did anyone make an attempt to DIY a high flow cone filter into a stock air box? How do you order a stock air box to try a project like this?
Appreciate 0
      10-19-2010, 08:39 PM   #151
E90aL
Banned
United_States
9
Rep
324
Posts

Drives: n52
Join Date: Jul 2009
Location: Arcadia

iTrader: (4)

for the people who did this mod, did you remove all the ridges from the box? i sanded for a long time and i still cant make the surface flat for the zig zag area.
Appreciate 0
      11-26-2010, 01:12 AM   #152
qclik
Captain
qclik's Avatar
Hong Kong
9
Rep
702
Posts

Drives: e92
Join Date: Nov 2010
Location: seattle

iTrader: (20)

i just did this mod, and my air box still got the zig zag thing like yours, but i think its fine as long as no more fiber of the charcoal filter left.

i didn't disconnect the sensor, cause i can't get it off the connector, so i just take it off from the airbox while still connected and put it back again when i install my air box back.
Appreciate 0
      01-03-2011, 01:28 AM   #153
klove83
Captain
United_States
23
Rep
653
Posts

Drives: Red E90, Red E36 M3
Join Date: Dec 2010
Location: Colorado Springs, CO

iTrader: (1)

Garage List
Nice I like
__________________
Appreciate 0
      01-19-2011, 04:20 AM   #154
intensee92
Colonel
intensee92's Avatar
United_States
30
Rep
2,389
Posts

Drives: Your Girl Crazy.
Join Date: Oct 2010
Location: Charlotte

iTrader: (10)

Question, so once you take out the charcoal filter right, did you all just replace the charcoal filter with a K&N filter and leave the other air filter in...? (two filters)

Or remove the charcoal filter and replace the air filter with a K&N one. (one filter)
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
Forum Jump


All times are GMT -4. The time now is 01:27 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
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