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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Thu, September 9th, 2010, 11:36 PM
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Jackpine Jackpine is offline
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Quote:
Originally Posted by LonestarROB View Post
Do tunes have to be adjusted depending on what air filter you have? I have a K&N(cotton/oil ) air filter now. Looking at going back to a paper filter(possibly the aFe Pro-Dry ). But need to first know if tunes need to be tweaked differently to accommodate different filters.

No, they don't. A "drop in" filter has no effect on the tunes (as long as it was "oiled" properly if it was the "oiled" kind). If the oiled filter is not set up properly, it will probably make the engine run like crap.

Personally, I would not use anything but an OEM filter. I have no information on the aFe Pro-Dry you are considering. What, in your opinion, makes it superior? Since it's a "drop in", it can't really have a greater filtration area and, if it filters to a smaller micron size, it will cut off airflow. Of course it COULD let in more air if it allowed more crud into the engine, but removing the filter altogether will do that too.

- Jack
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Last edited by Jackpine; Fri, September 10th, 2010 at 01:16 PM. Reason: Didn't need two names
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