Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Sometimes it helps, sometimes it don't.
Review: This is the second K&N filter I've purchased. Admittedly, K&N's biggest claim for their replacement filter is horsepower increase, which it probably does. My RAV4 V6 engine already had plenty of power, so I really couldn't tell any difference. It's other claim is an increase in fuel economy. When I replaced the filter in my '06 Camry, my mileage jumped from 29mpg to 35mpg. When I replaced the filter in my '07 RAV4, I didn't see any change in the mileage. It's still nice to know I won't need to buy another air filter for it though.
