Two lane road and three cattle hauling semi's bumper to bumper doing 55, I wish I could have done more than 100 mph but you know it wouldn't have hurt me to slow down and enjoy the scenery and made some better gas milage; but without the twin screws I wouln't have had the power to get past them. So in answer to "can you disable the speed limiter, yes you can" but slowing down to enjoy life wouldn't hurt either.