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assuming the K&N does affect the engine by letting more dirt in - is there REALLY a gaint o be had by just dropping one in?
i changed to a K&N on a past car and did notice a gain - but that car was turbucharged, and intake/exhaust mods provide a bigger bang for the buck on forced induction cars....
on our cars - does a simply drop in replacemenet K&N filter add any power you could feel???
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