Technically, the weight doesn't cause you to lose power, IE horsepower, but would slow the acceleration rate down. In other words, your top speed is the same, just takes a little longer to get there. But the vibrations that the DMD fixes actually use power, so I would be willing to bet that because the unit has a small diameter, and it reduces vibration that cap use HP, it probably is an even trade. Plus, your HP is a lot higher when all your crank bearings are intact. A blown bearing really reduces your power!
