I don't know about others, but I found that the stock set up had an abrupt throttle especially noticeable at low speeds around town. Don't know how this would affect driveabliity on track but I found it a bit annoying when using the hyper for grocery shopping. I was informed that this was caused by the bikes being set up a bit lean.
At the 600 mile service I asked AMS to install the new exhaust and. as an after thought, the DP race cam in the bike. I strongly recommend both upgrades as they take the performance of the bike to a new level. The AMS dyno shows figures of 92HP and 70 torque as compared to about 75HP for stock bikes. Don't know what the impact of the cams would be with the standard exhaust, but it really seems to work with the race system.
Only down side, for those who care, it that the bike is a bit cranky when cold.
At the 600 mile service I asked AMS to install the new exhaust and. as an after thought, the DP race cam in the bike. I strongly recommend both upgrades as they take the performance of the bike to a new level. The AMS dyno shows figures of 92HP and 70 torque as compared to about 75HP for stock bikes. Don't know what the impact of the cams would be with the standard exhaust, but it really seems to work with the race system.
Only down side, for those who care, it that the bike is a bit cranky when cold.