Open air filter a bad idea on X3?

Dawyoneh · 09-14-2011, 04:58 PM

I'm used to my three turbocharged Saabs where I exclusively used K&N filters unrestricted (no air box). I'm assuming the ECU is tuned to a specific setting and an open air filter will probably cause performance issues by throwing off the expected air/fuel ratio?

Can anyone corroborate?

Bora20 · 09-16-2011, 02:50 PM

If you are trying to make it louder, then yes it will do that. Other than that, save your money, use good quality paper filters and drive the car.

09-14-2011, 04:58 PM	#1
Dawyoneh New Member 0 Rep 6 Posts Drives: X3 Join Date: Sep 2011 Location: Louisville, KY iTrader: (0)	Open air filter a bad idea on X3? I'm used to my three turbocharged Saabs where I exclusively used K&N filters unrestricted (no air box). I'm assuming the ECU is tuned to a specific setting and an open air filter will probably cause performance issues by throwing off the expected air/fuel ratio? Can anyone corroborate?
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09-16-2011, 02:50 PM	#2
Bora20 Lieutenant 17 Rep 464 Posts Drives: 2007 BMW X3 3.0si M-Sport Join Date: May 2006 Location: Kamloops, BC, CAD iTrader: (0)	If you are trying to make it louder, then yes it will do that. Other than that, save your money, use good quality paper filters and drive the car. __________________ 2007 BMW X3 3.0si Titanium SilverBlack LeatherAutoPremiumM SportComfortActivityAssist & Bluetooth*
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