What is AdBlue / SCR Off?

AdBlue, also known as Diesel Exhaust Fluid (DEF), is a liquid solution used in the Selective Catalytic Reduction (SCR) system of diesel engines to reduce nitrogen oxide (NOx) emissions. The AdBlue system is highly effective in lowering emissions, but it can sometimes lead to costly maintenance and operational challenges. For drivers seeking to bypass the AdBlue system, a modification called "AdBlue Delete" or "SCR Off" disables the AdBlue requirement, freeing the engine from this emission control feature.

AdBlue / SCR Off is achieved by reprogramming the Engine Control Unit (ECU) to stop the injection of AdBlue, effectively disabling the SCR system. This modification is popular for certain off-road or competition vehicles where emission restrictions may be less stringent, providing a hassle-free driving experience without AdBlue refills.

How is AdBlue / SCR Off Applied?

To enable AdBlue / SCR Off, a tuning professional modifies the ECU software to deactivate AdBlue-related functions. This tuning adjustment often involves:

• ECU Reprogramming: The software within the ECU is modified to disable the AdBlue system.

• Sensor Deactivation: Sensors connected to the SCR system are deactivated to prevent any dashboard warning lights or error messages.

• Hardware Bypass: In some cases, the AdBlue injector and tank are disconnected or bypassed for complete system disablement.

With AdBlue / SCR Off, the SCR system is no longer active, allowing the vehicle to operate without relying on DEF, saving on both fluid refills and maintenance costs.

Benefits of AdBlue / SCR Off

Removing the AdBlue system can offer several advantages:

• Lower Operating Costs: By eliminating the need for DEF refills and SCR maintenance, owners can save on long-term operational costs.

• Increased Reliability: The SCR system can be prone to errors; removing it can reduce potential failure points and improve overall vehicle reliability.

• Potential Performance Gains: With the SCR system disabled, some vehicles may experience slightly improved engine performance.

Legal and Environmental Considerations

It’s important to be aware that disabling the AdBlue system may have legal and environmental impacts:

• Legal Compliance: In many regions, tampering with the SCR system is illegal, and vehicles may not pass emissions tests if the system is removed.

• Environmental Responsibility: Disabling AdBlue can increase NOx emissions, which is harmful to the environment.

• Warranty Voidance: AdBlue / SCR Off may void manufacturer warranties, and some buyers may see it as a disadvantage during resale.

Vehicles We Serve with AdBlue / SCR Off

We offer AdBlue / SCR Off modifications for a wide range of vehicles, including popular brands and models in diesel performance. Contact us to learn more about how AdBlue / SCR Off can improve your vehicle's driving experience.