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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > K&N filter makes it quieter??



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      01-17-2008, 07:14 AM   #1
NegativeIons
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K&N filter makes it quieter??

I put a K&N filter into my 335xi this morning..and noticed on the drive into work that it seemed quieter. Is this typical? I was under the impression that it probably wouldn't change anything as far as noise goes..so I'm somewhat confused.

I was thinking it was all in my head (and maybe it is), so I am going to try to put the paper filter back in and see if the sound returns.
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      01-17-2008, 07:24 AM   #2
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It's all in your head.
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      01-17-2008, 05:02 PM   #3
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in head.
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      01-17-2008, 05:14 PM   #4
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I put the BMC filter in and I feel the car is much smoother but I think thats also in my head too!!!
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      01-17-2008, 05:29 PM   #5
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It's in your head!!!

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      01-17-2008, 05:46 PM   #6
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It's in your head!!!

I agree with everyone.
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      01-17-2008, 05:47 PM   #7
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I put a clear bra on my car and the car feels more aerodynamic

J/K
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      01-17-2008, 06:20 PM   #8
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lol, ok I drove home and decided....(drum roll)







IT WAS ALL IN MY HEAD

Also, on a similar note, after washing my car it seems faster! (just kidding)
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      01-17-2008, 06:26 PM   #9
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I was going to say the same .......I washed my car and its running......
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