Quote:
Originally Posted by Halon
The K&N also physically looks much smaller then the others, and I'd think that would have a part in why it's numbers were lower. It would be interesting to know what a K&N size similar to those others tested would have done.
Cool test guys.
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The larger of the two K&N's is the air filter K&N chose for their Typhoon and FIPK kits; its actually much larger in person than it apprears in the pictures, and due to the very wide base it has about the same filtering area as the others do. The ~10whp gains with the Perrin over a K&N filter (they tested one similar in size to the Vibrant and Amsoil filters) have also been reported by CBRD which is a very large, professional, race shop in Pennsylvania. When I had my S2000 is when K&N started to get a lot of bad press regarding poor quality control, poor filtering quality, and sub-par performance. This test just backs that up and I'm very interested to hear, if K&N responds to me, their reasoning for the poor performance.