I have a Graves slip on and think It Is the best modification you can do for the money. Only loud when you want it to be, if I see a cop I shift to a higher gear. The stock can has a cat. converter[at least in Ca and parts of europe] so why would you want to keep it stock? As far as poser factor?..ha ha I don't think so at least not for me. On my previous bikes, 99R1 and 98yzf-750 I kept them stock. But I'm glad I switced to the dark side of mojo on my 02R1.
Tracks days? I'm sure you can learn a lot and are worth the money but don't think for a second you don't get just as many squids and posers riding track days. I have a friend that rides track and he won't even ride on Fridays as according to him it Is down right dangerous, the squids race full speed down the straights but can't take corners safely. As far as being able to use the extra HP of an aftermarket pipe etc? I know I can't at least not in the curves but when I need to pass a group of cars or a large group of Harley's, than yes I need all the HP I can get. Where I ride the opportunity to pass is very often over the double yellow were maximum acceleration Is of the utmost importance.
No No, Mods are not just for poser factor as they have a practical side. Besides it is fun to mojo your new baby. My dream list would be as follows, carbon fiber full fairings, carbon gas tank, magnesium wheels, Graves ram air box with velocity stacks, power commander. Bottom line is Yamaha R1 Is a great bike stock but It can be improved with some basic mods. Peace:beer