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Old 03-05-2009, 02:52 PM   #8 (permalink)
Master EcoModder
Join Date: Aug 2008
Location: South Dakota
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WonderWagon - '94 Ford Escort LX
Last 3: 51.52 mpg (US)

DaBluOne - '99 Ford Escort SE
90 day: 48.97 mpg (US)

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RE K&N: More hassle, less effective than paper and NO MPG Gain.

If you have a MAF and over oil the K&N filter, the MAF will need frequent cleaning.
If you under oil the K&N filter, it's next to worthless.
When you clean the filter (likely required more often than K&N suggests), you must let it throughly dry (several hours) before re-oiling and reinstalling.
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