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K&n filters

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I have a 2007 328xi, will a k&n drop in filter increase hp or mpg? Do you think they are worth it?
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No.
I have a 2007 328xi, will a k&n drop in filter increase hp or mpg? Do you think they are worth it?
K&N air filters were great for my 1976 BMW R75/6 mortorcycle - but I don't think our modern Bimmers still use lean running carburetors!

Listen to Floyd and save your money.

Tom
No.

But it may screw up your mass air flow sensor if you over oil it.
I have a 2007 328xi, will a k&n drop in filter increase hp or mpg? Do you think they are worth it?
Stay away from them. Don't even attempt it. They will clog up motor. Bad
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