Reviewed By Mike F (Marietta, GA) Reviewed for a 2010 Hyundai Genesis —3/20/2013 9:03 PM
Dropped it in and had noticeable improvement. Mpg went up from 23 to 24 of the highway.
Reviewed By Ronald C (riverside, CA) Reviewed for a 2013 Hyundai Elantra —3/29/2015 12:22 PM
The AEM filter actually does make a difference in responsiveness. The car responds to gas pedal a little better. I don't know if I gained any horsepower or gas mileage. But it's a great filter so far.