Filtered Positive Pressure To Keep Dust Level Down

K&N might not be the best choice as a prefilter, but such a statement can cause a flame war.

I threw out mu K&N filter after putting a strong light to it and being able to read through its many holes, went back to paper filters after cleaning the dusty throat of my post filter throttle body.

Others might regale you with their huge MPG and HP increases with a K&N.

Internet claims, Imo, are meaningless.