Reviewed By Joe B (TOWACO, NJ) Reviewed for a 2013 Audi Q5 —3/29/2015 7:16 PM
I notice a increase in engine power of at least 20 percent. Mileage has not improved, however.
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.