was driving on a nice striate highway uphill got up to 155 and felt the limiter slowing me down but right when that started I hit the top of the hill and started going down so it slipped into 160 in under 1 mile. it was pulling hard all the way up the hill so i know if the limiter was off it i would be able to get 170 180+ might even get 190+. It was grate i have it on vid just trying to get it off the cam and onto the computer. oh and it was still running smooth as silk