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Originally Posted by Socom
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?
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well you also gotta keep a few things in mind..they dont put filters like than into mass production cars for several reasons..one being that it produces more noise..the general public that buys BMW's want a quiet and refined car. Two, its not cost effective...the difference between a regular paper filter and a high flow filter can be as minimal as lets say..one dollar..but if you multiply a dollar by the millions of cars BMW sells thats Millions of dollars spent extra for people who could care less..there are many other reasons as well but these are the two most basic reasons why they dont put filters like K&N's into mass production cars...It has nothing to do with the age of the technology...your basic internal combustion engine was developed over 100 years ago..
