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I think it is because there is a bigger potential for problems with a K/N style compared to OEM or paper style. You just install and forget about it for 30,000 miles with the OEM filters. The K/N require yearly maint and if you go too long without cleaning, damage the filter element in any way or oil it too much can cause more problems in the long run.
I think as long as you take the proper care, you will not have any problems. K/N will not last 30,000 miles without cleaning.
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06 5AT CGP Qtz w/ Navi
ASA AR1 Chrome 17X7
A-Spec suspension w/ Progress RSB
35% 3M tint & clear bra + head/fog lights
Spoiler kit/wing, air deflector, metal trim kit, cargo net, trunk tray, Nav screen film & All season mats
350Z cargo net, dr edge guard & Acura racing pedals.
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