On a Tune-boy thread the guys were talking about something Wayne said while checking a Roaster on the dyno for a Tune-boy program. It was about how Triumph arrived at their higher 2010 HP/Torque numbers and his findings while testing on the dyno. If I remember right, he speculated that they used different gears for each number, and it makes perfect sense too. 4th gave higher HP results and 5th higher Torque (could have been the other way around), so they set up the ECU software to exploit that difference and advertised increased power for 2010. That was the only time I heard anyone talking about it, but it's a solid theory and answers a lot of questions. Otherwise just changing the exhaust to achieve the increase doesn't hold water with me. That could be the only real difference between the '09 and '10, has anyone heard any more on the subject?