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Ive never heard of the rotating thing but I do know the downside to the K&N is the oil on the filter. After driving for a while, and especially after romping it a few times, the oil from the filter gets on the MAF and kinda fouls it up. I speak from experience. The K&N was awesome when I first put it in and then I started gettng a bunch of little problems. Fixed with a good MAF cleaning and replacing the K&N with a good OEM filter.
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