Absolutely the best money I ever spent on my bike. I also have an 05 America. HUGE difference. It didn't make any significant mileage difference but I did end up going from mid-grade to premium fuel. The bike seemed to run better on it.
With airbox and UNI, I'm getting 66 ft. lbs. of torque at the rear wheel. The torque is what you will notice the most. Go for it!
