Air Filter Technology, How Engine's Work, and Automotive Performance

Chapter 18 - Mileage


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Many of our customers write us about the mileage improvement they experience after installing our filters and intake kits. In our opinion there is a relationship between airflow restriction and mileage because energy is wasted when an engine has to work harder to suck air through the intake tubes and air filter.
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Air Filter Technology, How Engine's Work, and Automotive PerformanceBy K&N Engineering, Inc.