This is the generation 1 R-Vit. It cannot disable the speed cut function at all. Plugs directly to our OBD port and will display quite a handful of useful information, like intake air temperature, injector duty, ignition timing, water temperature at thermostat, ATF temp (for AT), etc.
The generation 2 R-Vit is called the R-Vit i-color. It has the same retail price!! The R-Vit i-color is Toyota CAN bus compliance! So it will work with the new Lexus and can display additional information like wide band A/F, control injector duty as well as radiator Fan speed! It even takes additional oil temp and oil pressure sensor!