I finally got a chance to test my pipe today when 4 of us went on a 20+ mile ride today. I couldn't believe the impact my new pipe made on my low and especially mid range. I would say it had about a 30-35% increase in power. It added a few more MPH on the top but the biggest gain was in the mid range. I unscrewed the baffle on my original muffler and cut around 3" off the inside tube I was pleasantly surprised that the pipe sound level didn't increase. I would definitely recommend the new Santa Cruz Scooter Works pipe!