Reviewed By Victor W (Littleton, CO) Reviewed for a 1999 Honda Civic —4/30/2010 11:01 PM
I switched a slightly dirtied paper filter with this one in my Honda Civic and noticed a small difference in tone (not much though). The acceleration is a bit smoother and my gas mileage definitely seems to have improved but I can't honestly list figures as I haven't filled up my tank yet. Also, my car used to experience a terrible rough idle when stopped (usually at intersections), but now the idling has great improved. So, it definitely helped, but apparently I've got some more maintenance to do before my troubles are behind me.