Replacement air box and/or air filter

FlyingKid · 03-04-2011, 02:15 PM

Just looking at upgrading some components on my car and was wondering if any of you guys have suggestions regarding aftermarket air boxes and or air filters.

Worth it? Which ones? Any issues?

Thanks for the help!

FVM3 · 03-04-2011, 02:18 PM

k&N filter

Tj Hunter · 03-04-2011, 02:21 PM

Not really worth going with either, BMW does a very good job when it comes to their intake systems. Do the Mr.5 box modification if anything. I personally use stock air filters or at least paper cone (I have AFE intake with dry filters on my M5), they filter a LOT more particles of dirt then a "K&N" style (cotton reusable) filter.

Chriztofor · 03-04-2011, 02:24 PM

^ Also, K&N air filters use oil. Oil can gunk up the air flow meter which is a very thin wire and pretty expensive to replace.

03-04-2011, 02:15 PM	#1
FlyingKid New Member 0 Rep 6 Posts Drives: 2011 323i Jet Black Join Date: Mar 2011 Location: London, ON, CANADA iTrader: (0) Garage List 2011 323i [0.00]	Replacement air box and/or air filter Just looking at upgrading some components on my car and was wondering if any of you guys have suggestions regarding aftermarket air boxes and or air filters. Worth it? Which ones? Any issues? Thanks for the help!
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03-04-2011, 02:18 PM	#2
FVM3 Major General 273 Rep 5,751 Posts Drives: e92 m3, f30 328i Join Date: Sep 2010 Location: Los Angeles iTrader: (2)	k&N filter
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03-04-2011, 02:21 PM	#3
Tj Hunter S54 Master Tech 5 Rep 89 Posts Drives: E46 M3, E83 X3 Join Date: Mar 2011 Location: Minnesota iTrader: (0)	Not really worth going with either, BMW does a very good job when it comes to their intake systems. Do the Mr.5 box modification if anything. I personally use stock air filters or at least paper cone (I have AFE intake with dry filters on my M5), they filter a LOT more particles of dirt then a "K&N" style (cotton reusable) filter.
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03-04-2011, 02:24 PM	#4
Chriztofor Colonel 103 Rep 2,783 Posts Drives: '06 325i and '13 X5 Join Date: Feb 2010 Location: Chicago Burbs iTrader: (1)	^ Also, K&N air filters use oil. Oil can gunk up the air flow meter which is a very thin wire and pretty expensive to replace. __________________ If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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