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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Stock Air Box mod ?



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      10-21-2008, 12:31 PM   #23
scanboy
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Quote:
Originally Posted by dvpouldar26 View Post
Those who have done the mod say that throttle response increases and the lag in the low rpm's disappears.
^^^ This is true. Did mine a while ago, more responsive at lower rpm, very nice feel.
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      10-21-2008, 12:54 PM   #24
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should be a good mod for those with the muffler delete as some claim a small loss in low end.
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      10-23-2008, 01:18 PM   #25
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Thank you all for your input

Thank you to all who replied with experience and results.
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      10-23-2008, 09:48 PM   #26
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Did mines right when K&N released the filter for the E92. No regrets. The home made ram air scoop does help.
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      11-01-2008, 10:40 PM   #27
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Added K&N and SwoopScoops

I removed the charcoal filter when I installed the new K&N and swoop scoops. A nice performance improvement from stock, but very little sound difference. May be a bit early to tell, but I believe that I improved by about 1.0 mpg.
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      11-18-2008, 09:22 PM   #28
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"SERVICE ENGINE SOON" light on

"SERVICE ENGINE SOON" light on.

--------------------------------------------------------------------------------

As of yesterday I noticed a "service engine soon" display. I called the dealer/service who stated that this usually indicates an emmisions issue.

I have removed the charcoal filter and added the K&N.

Has anyone else had this issue ???
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      11-18-2008, 09:31 PM   #29
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mine comes and goes every so often.. wait a couple days to see if it goes away...
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      11-21-2008, 11:28 PM   #30
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I have had my charcoal filter removed for at least 60k miles and have never had a SERVICE ENGINE SOON light.
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      11-22-2008, 10:38 AM   #31
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Never had a CEL with this or either aftermarket intake I had on my car.
Maybe a dirty MAF sensor>?
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      11-22-2008, 06:14 PM   #32
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Quote:
Originally Posted by e90David View Post
ya maybe the K&N filter you installed was over oiled

or maybe you didn't clean up the charcoal from the filter as well
ya u got the right point. one of my friend has the same prob cuz of the dusty charcoal filter.
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      11-23-2008, 11:50 AM   #33
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Yea just got to spray some compressed air to clean it all out.
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      11-23-2008, 02:51 PM   #34
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its the gas cap bs i get a cel all the time it will go away code 4006 i think
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      11-23-2008, 08:41 PM   #35
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Service Engine Soon light

I did not change or do anything. The light has gone out, and has stayed off for several days thus far.

Thank you for the input.
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