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Old 03-19-2014, 09:13 PM   #88 (permalink)
Cobb
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Join Date: May 2012
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Cool

Read both articles. One said its the plumbing to the air box, if not the air box itself. The other said basically that the better filters are more restrictive and a guy who owns a diesel watched them put the filters on a testing machine for filters and filtration testing.

When I quit noticing an improvement Ill quit buying them.
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