I just bought a 2008 vx cruiser with 15hrs. Took it out for it's first try out this weekend and found it to be slower than I expected. It runs at about 47 MPH...I thought maybe the speedo wasn't accurate but checked it with GPS and it's bang on..The research I did lead me to believe these did 53 mph consistantly. The only thing I see that might affect speed would be corrosion on the ride and intake plates.( I don't know if the corosion is normal or if it was exposed to salt water ) And would this affect top speed? The rpms appears to be ok and engine sounds good.