Napa proselect vs gold air filter3/7/2023 ![]() ![]() I found that figure hard to believe but that's we were taught in class while discussing the topic "ventilation". I know from my stint in the fire service that screens in windows can cut down on CFM by as much as 50%. CFM can be adversely affected by simple things. If that doesn't matter to you, that's one thing, but I think it's worth noting in this discussion. If you look at a rectangular air filter that is 6" x 8" and it has 1/4" of flashing all the way around it (and one Fram I have looks much worse than this in spots), that reduces it's filter surface area by about 7" square. Well, I stick by my assessment of the Fram air filters being 2nd rate. Their Wix branded filters along with the NAPA Gold are a little bigger in most numbers. > ^)Īs for the WIX OIL filter in K-mart labeled as Castrol (or Penske), I think that is Wix's second grade line. When the weather is nice, I use a K&N cone filter. Since there are many more part numbers in air filters as compared to oil filters, I would suspect a great amount of cross-sourcing.Īnyway, I only use the stock airbox and filter 4 out of 12 months each year. I'm guessing there are only a couple producers of my particular Honda part number and most brands cross-source (buy from the same manufacturer). ) have excessive amounts of rubber flashing which clog the edges of the filter pleats and cut down on the CFM potential. ![]() Honda uses a rigid plastic frame and a more sophisticated gasket than the typical rubber mold around a chunk of pleated filter media which comprises most air filters I've seen. ![]() but they all look identical to the OEM piece. I've looked for aftermarket air filters for my Honda ('95 Civic Coupe) and checked a number of different brands. ![]()
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