How fast should my 150 hp out bord boat motor go up to(part 2)?

well i have a 18 feet 12 wide boat this motor was not built for it it used to have a 100 hp motor that went up to 80 mph and the one the company put in is a 150 hp.it is a v hull,and its fiber cl for only 2 or 3 people on the boat how fast should it go up to?