Alright, so far its been 3 weeks with my new Whip, and this past friday I added a new K&N air filter, let me tell you this one item makes a world of difference, it's true about the increased HP as well as improved gas mileage, I would recommend to everyone who drives to make at least this minor addition! Sure they cost more then other filters but like the old saying goes "You Get what you pay for!" and in the long run this one item pays for itself! Trust me on this one!