Has anybody put in a K&N filter. Any improvements on mileage, besides the benefit of not replacing ever the filter. Any warranty issues with this , is it accepted by Dodge, or should I swap it with the original when I go for service. Also when I opened the air box to put in , I could not see in the bottom where the air is sucked from the outside , I assume there is an opening for pullin in air. Thanks for your support
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20 years ago