Every bike will be slightly different depending power mods you have done. Exhuast, air filters,and so on. the best way to know is to simply dyno the bike and see where it stops making power. Preturbo my bike was making power up to 10,800rpms.
If you are not at full throttle in first gear, does not matter where you shift at.. you are already behind.. Dont care who or what you are... that first 300' is EVERYTHING...Once in second being able to go to full throttle
How do you full throttle first gear without looping it. That's what happens when I go to wide open throttle in first.