After replacing the QTS cam with the R&D piece I performed a little testing. I have discovered that my 2013 FZS is faster by about 1.5-2mph at 6.5+ trim then at higher settings. I was able to achieve 67.7mph two up and 68.6 one up using a GPS. Only mods are a ribbon delete and R&D grate. Next mod will be an impeller this spring.