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Except that this is a speculation. Without evidence, you can try „common sense" all you want, will never win. And yes, actually most (especially the cheaper) aftermarket airfilters are crap! No advantages, only risk. Plenty of analysis and videos about it. On a stock engine - this is a suicide. Evidence available at the beginning the thread. Even if it did not cause the issue, which I also agree.
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"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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