Did they change the timing also, and if so, do you know by how much? The higher octane fuel being less susceptible to detonation, advancing the timing would make sense.
FYI, I have the Manufacture's Cert. of Origin for my bike, and it shows 26 Shaft HP (SAE).
Yamaha FZ 6
Kawasaki Ninja 250
Honda CBR 250
Last edited by Ercoupe; 11-13-2012 at 01:47 PM.