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Old 04-04-2008, 02:31 PM   #10 (permalink)
trebuchet03
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
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Quote:
Originally Posted by Chris D. View Post

with restricted airflow your engine dumps more fuel in and you get less burnt
fuel which causes anything after the engine sensors, cat's, ect to clog or
fowl up not to mention more carbon buildup..
Dirty air filter doesn't mean restricted flow

http://autospeed.com/cms/A_2232/article.html

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The only filters I change frequently are:
*Oil: 10K Miles @ oil change
*Cabin Filter: 25K miles (and I spend the $30 for the factory one because it has a charcoal layer - it has worked pretty well at filtering diesel exhaust )

I change my air filters when the rubber/plastic seal falls apart.. Probably if the oil analysis shows a consistent rise in silica too.
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