YOUR DEALER IS EXACTLY RIGHT!!!! no matter how many mass air flow sensors you install, as long as it sucks that K&N oil past the two filaments it will short out the sensor in no time flat. OR, if you leave your air cleaner stock and never change the filter.
i ran into the same problem and so did the Bondurant School in Phoenix. they pulled all the K&N filters because they were "shorting" out the sensors. its no joke and is an idiosyncrasy with your car. the old ones worked because of the way the air flowed over the sensor; it did not promote oil covering the sensor. with the new ones even a little bit will create problems. my suggestion as well as many other dealers suggestion is to leave your air cleaner stock and change the filter regularly.
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