A 100% standard williams made 150 on RST's iirc, spot on what it left the factory with, even 15yrs down the line, same with some of the 182's/172s.....where as there are a couple on here took theirs to awesomegti and tdi north, and put out high 180's and low 190's with a 100% standard car lol, never been anywhere near true, considering most of the sports always make high 160s when they leave the factory...
Either way rolling roads mean nothing, inlet temps change, atmosphere changes.....its all about power down onto the road, real world driving.....on track, even all this 1/4 mile times are just ghey, if i wanted a quick qtr id buy a 4wd car with silly power.....real world situations ftw