I believe that is illegal in the US. "A person may not advertise for sale, sell, use, install, or have installed, a device that makes an odometer of a motor ve

I believe that is illegal in the US. "A person may not advertise for sale, sell, use, install, or have installed, a device that makes an odometer of a motor vehicle register a mileage different from the mileage the vehicle was driven, as registered by the odometer within the designed tolerance of the manufacturer of the odometer"[0] [0]https://www.law.cornell.edu/uscode/text/49/32703 https://www.law.cornell.edu/uscode/text/49/32703