Author: 4wdKuga
Subject: K & N filter or not
Posted: 25 Jun 2018 at 8:39am
In all the back to back tests of a performance filter versus the OE paper filter the results were always inconclusive because it was found the flow efficiency of any performance filter was only better than a paper filter if the OE filter was less efficient.
Subject: K & N filter or not
Posted: 25 Jun 2018 at 8:39am
In all the back to back tests of a performance filter versus the OE paper filter the results were always inconclusive because it was found the flow efficiency of any performance filter was only better than a paper filter if the OE filter was less efficient.
So basically on some vehicles the paper filter is not as good as the equivalent K&N filter but in some cases the paper filter air flow was actually better.
If you haven`t seen the result of an independant flow test for a particular vehicle then the K&N may improve performance but also it may not be as good as the Paper filter.
I personally stick to the OE paper filter now as Ford has done the testing on the housing and filter design to get the best results - I doubt that K&N has done the same as its a one filter media suits all in a shape that fits the housing.
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