AdBlue liquid is a mixture of urea and deionised water which is injected into a vehicle’s selective catalytic reduction system to reduce harmful nitrogen oxide (NOx) levels, converting exhaust emissions into a far less harmful mix of nitrogen and water vapour.

Adblue offers environmental advantages to running vehicles to cleaner emissions standards.  There are also commercial advantages such as cheaper vehicle excise duty, increased fuel efficiency (claimed by the manufacturers) and avoiding the London LEZ charge.

Leaving the above advantages aside for the moment, there is also a downside to this. Obviously, adblue cost money, which the operators are paying on top of their fuel cost. This is however by far not the worst of it, the worst is adblue systems are extremely unreliable and stupidly expensive to repair. If we take Euro 6 standard trucks for example, should any of the major adblue system components fail, you are probably looking at 3K – 15K bill to get that sorted. Looking at such facts, it is clear that the downside of adblue system outweighs the benefits of it by some distance, hence, over time, suppliers to the commercial vehicle industry appear to have found their own ways to disable the adblue system.

There are a few options available at present to disconnect the adblue systems. Adblue emulators are one of the most popular option. The main component of Adblue emulator is circuit board (PCB), which is normally encased within a plastic or metal box, or simply wrapped, or heat-sealed in conduit. PCB is preloaded with SCR software for required vehicle model. Emulator would normally be connected to earth/negative, power/positive and also to vehicle’s CAN lines. After installing the emulator, power to SCR system would be disconnected by removing a fuse or cutting through wires. Now, once the vehicle is started the emulator would kick in sending signals to the ECU via can lines imitating/emulating fully functional SCR system performance. Therefor, the ECU would ‘’think’’ scr system is working as it should and would not bring any error codes or limp mode even though the the SCR system is disconnected. Adblue liquid will no longer be consumed once adblue emulator is installed. Due to this, if running the vehicle on the emulator for some time, you may expect to find some problems with the SCR system, should you choose to remove the emulator in the future. For example, It is common for components such as adblue injector to fail after not being used for long periods of time. Emulators are also available for specifically nox sensors and dpf, and there are also emulators, which would disconnect the lot.

Although most demand comes for adblue emulators for trucks and other heavy transport, there seem to be a lot of interest from light vehicles/cars/vans as well. There are also various adblue emulators available for construction, agricultural and other industry special heavy transport.

Another option to disconnect adblue is by downloading the ECU file, modifying it and uploading back on to the vehicle’s ECU. There is no need to do anything mechanically to the vehicle or disconnect anything, basically everything stays the same, just the file is modified. A wide variety of file modification services are available, such as:

Power map, Adblue delete, DPF delete, EGR delete, NOX delete and many others…