I am close to purchasing my first H D. I have decided on the Road King FLHR. I have been reading all I can here on HDT and have learned alot so far, and I still have not found a complete answer to "What exactly is stage 1? and what does it do for me?" It seems that it consist of a new breather for more air intake, a set of new pipes for less restriction (and better sound ) and a tunning of the computer and or fuel management. It sounds as though it improves the engines ability to disperse heat by moving more air, better performance, more power (torque), and of course the great Harley sound (there is no better reason to have one). Am I missing anything? One more question on the same subject I think. I also read alot about, if the motor seems to run hot, the fuel mixture may be too lean? Not being a motor head it would seem to me that a richer mixture would run hotter. Thanks again for all of your input.