it was impossible to open up due to the heavy traffic. As you can hear the power band kicks in with no problems and the bike really moves. I am not a good enough rider to get the most out of it and to be honest it scares me. LoL 70mph (ish) was the fastest speed in this shot this was due to the fact i was on public roads. I have had 105mph from it with alot more to go but lost my bottle.