Hey Guys, I just bought a 2004 WR450F. I have been doing lots of research. My last bike was a XR650L. I figured this bike would have lots of power and snap. I have not riden it yet, since it is at home and since I am working 4 hours from home I will be hopefully taking it for a spin friday night. I am about 6' tall and 220ibs so it should be the right size for me. I realize that my 650 had only 8.3:1 compression and this baby has 12.5:1 with a shorter stroke engine for higher reving power. So my question to you guys is what is the proper way to ride these High Performance machines? Are these bikes made to be riden hard or are they low end torque monsters like the 650s? I was pretty dissappointed with my 650 since the center of gravity is too high which made it hard to ride in summer-fallowed fields. And the 650 didn't really have that much juice. My main use for this bike will be ripping down dirt roads and trails. Not really many hills here in saskatchewan. What do you figure? Should I be running 91octane?