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Originally Posted by shadye90
Actually i beg to differ...The secondary filter actually resembles more of an in cabin microfilter than a "aerodynamic device" that you incorrectly assumed..What you are trying to refer to is a venturi plate or panel which this secondary filter has no resemblence to..I have built countless Honda Dohc Vtec motors that have been used on the drag strip as well as the circuit which rev up to over 9500 rpm's so i think i know a thing or two about airflow..so hows about the next time BEFORE you try to make a smart ass comment towards someone get your facts straight..
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How about this..Unless you track the car a CAI on a BMW is an absolute worthless mod that delivers mediocre results for the $$ paid.
The "high flow" filter will allow more dirt into the engine and could cause problems with the MAF sensor.
If 1940's air filter technology was soo great don't you think manufacturers would still be using it today?
