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Old 05-07-2013, 10:58 PM
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Question AiRaid filter vs Spectre

I installed an AiRaid cold air induction system about 6 months ago. Mine has the Synthamax filter which is washable. I took it off the other day to wash it. As many know, washing filters is easy--waiting for them to dry is another. I bought an off the shelf Spectre filter which is apparently oiled and according to the web site-is disposable. With the spectre filter in, I got 2 mpg more driving at 79 mph...hey it's not 80 at least. Now I am in a quandry of staying with the Spectre and replacing it or staying with the AiRaid and washing it. It's very dusty in MT where I am so a washable filter makes more sense but my brain is going "2 mpg 2 mpg!" Does anyone know of a high flow filter that is cleanable? I'm guessing an oiled filter can be thinner and thus higher flow. Surely there must be a washable filter with a higher flow rate? Thanks for any suggestions!
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Old 05-08-2013, 12:41 PM
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Re: AiRaid filter vs Spectre

In general, oiled gauze filters often flow best. However, they also let more gunk in, and they are a pain to maintain. One instant reading of your EVIC is not a very reliable test. Average your MPG for a month with the Spectre, and a month with the Airaid -- driving the same routes, same style, similar climate, same gas, etc. There are too many factors in MPG -- to say that the filter did anything. If your old filter was quite dirty, any filter would have improved your MPG.
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