Review on 33 5074 Replacement Air Filter by Danny Nedumaran

Spreadsheet with all the numbers and calculations you can think of. I was completely amazed after installing a K&N filter on my 2019 Honda Accord Touring 2.0. There was a noticeable change in horsepower, but the biggest plus was the increase in gas mileage. You don't usually see that much increase unless you change tires or new plugs or something. The attached schedule covers approximately 13 months. The K&N filter has been standing for almost 3 months. I've gained 1.8mpg since switching and would recommend it to anyone.