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Old 08-07-2012, 08:26 AM
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Bikenut Bikenut is offline
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Location: Orange County, CA.
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Originally Posted by westxsrt10 View Post
Most high quality paper filters have TWICE the surface area of a cheaper K&N. More surface area allows more air flow. I have used oiled filters, the quailty varies greatly. The Airaid oiled filter is my choice, is twice as thick as most others.
Most Diesel engine warrentys will be voided using a K&N.
#1 Surface area is one factor, but more surface area does not necessarily guarantee more flow.

#2 Are you comparing all oiled filters in your statement? Yes, a cheap Pep Boys gauze compared to a two stage foam by a quality company will definitely vary greatly

#3 That is simply untrue about diesels and K&N. If I cared to spend the time, I could get you pictures of various aftermarket filters (mainly K&N) sitting on the shelf at your local Ford, Chevy and Dodge dealership that they will gladly sell you for your diesel.
In fact, a free flowing intake makes MUCH more difference on a turbo diesel than it does on a naturally aspired gas engine.

Retro-Soutions 55W HIDs - Firestone 5K Airbags -
18" Magnaflow - integrated electric tailgate lock and EZ-Down kit - Cabin air filter retrofit - $79 Catch Can - KORE leveling kit and Bilsteins front and rear
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