polarice

I bought a non-cuurent 09 150 speedster and the best I can get for rpm is 7700. Thats with an empty tank of fuel and just myself in the boat. Load it with fuel and the most I get is 7500rpm. The dealer is saying thats normal. I said the boat is rated for 255hp at 8000rpm, so how do you claim 255hp if it only runs 7500rpm. Is 7500rpm normal?? What is everyone else getting?? I am getting 58 mph out of it.

Thanks
Mike