Originally Posted by english_bob
This is better than the Bush vs Kerry debate.
Anyway, I plan to get mine dyno'd with stock filters then add K&Ns and get it re-dyno'd.
Should clear up some of the differences of opinion with fact.
The only way to have a definitive answer is to use Brand New Stock filters against Brand New K&N filters. Otherwise you are comparing dirty filters to clean filters. I can compare dirty stock filters to clean stock filters and show a hp difference.