The regulation is obvious in that disconnecting/eradicating Adblue system, be it by putting in adblue emulator, remapping the ECU or in every other way, will lead to making your vehicle unlawful to be used on a public street. This is completed electronically by connecting to the vehicle’s ECU and disabling/removing the adblue system. In short, adblue delete works by connecting to the vehicle’s ECU and eliminating/deleting SCR/Adblue system.