Just a question for someone who may know more than I;
If Ford had dozens of engineers and millions in research for the new focus' engine, and there was a way to increase power AND fuel economy, don't you all think they would have already done it? Why would a smaller company(I'm not by any means calling K&N small) who undoubtedly spent way less on R&D than Ford, be able to improve so much on something which has been already developed so thoroughly? Do you think it is only a noise issue? Because the difference in cost for materials for both a CAI and what they put into the stock Ford intake must be marginal. So what gives?
Don't get me wrong, I brought home my brand new sport pack SE hatch tonight(YES!!!!) and I DO want one of these K&N CAI's! (CARB sticker please Troy!!!!!!!!!)