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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Is it really better to have the OEM air filter



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      03-08-2013, 07:22 AM   #1
Dark_Knight_335
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If your intake is OEM? I have heard the HP autowerk oiled foam rubber filter I put in is making no difference, or even taking away from what the OEM drop in filter does the same as per factory spec.
Thoughts?
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      03-08-2013, 08:13 AM   #2
divisionbell77
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It will do nothing compared to the OEM.
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      03-08-2013, 10:13 AM   #3
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Hi there

Better option is to install the filter used stock on euro cars. It's paper so no oiling and has a better flow then the charcoal one you guys in the us have...
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      03-08-2013, 10:40 AM   #4
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I'm not a huge fan of oiled foam filters. I know they are used quite commonly, but they make a mess, break down over time and can occasionally coat sensors with oil causing faulty readings.
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      03-08-2013, 08:17 PM   #5
Dark_Knight_335
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Quote:
Originally Posted by Dark_Knight_335
If your intake is OEM? I have heard the HP autowerk oiled foam rubber filter I put in is making no difference, or even taking away from what the OEM drop in filter does the same as per factory spec.
Thoughts?
That's what I thought. Switching back to OEM tomorrow! Nice day for it.
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      03-08-2013, 08:19 PM   #6
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Quote:
Originally Posted by BMW_Belgier
Hi there

Better option is to install the filter used stock on euro cars. It's paper so no oiling and has a better flow then the charcoal one you guys in the us have...
That's the one I have brother. Somehow I have the paper one- no charcoal that I can see- I held it up to the light
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