Review on WIX Filters 46388 Air Filter Panel: top-quality pack of 1 for ultimate filtration performance by Marcus Britton

This is a replacement filter for Civic EX. If you're using a filter for DX or CX or whatever, this isn't the right size. Whoever installed the previous filter in my Civic used the wrong part and the filter actually buckled from the inlet pressure into the airbox. This filter works great. I can feel the difference, the old one must have been dirty. I don't believe in efficient air filters for a tuned car like this Civic. Honda and Wix know what they're doing!