top of page

Physical Exhaust Modification (DPF)

When installing an EMRT Professional DPF Delete Emulator, the engine’s software will no longer initiate active regeneration cycles. To prevent the ceramic DPF (Diesel Particulate Filter) from becoming a terminal blockage 'which can lead to catastrophic turbocharger failure and engine backpressure' the physical filter must be modified. ⚠️ 

dpf-illustration.jpg

Depending on your vehicle type (On-Highway Truck or Construction Equipment), there are three primary ways to manage the physical exhaust once the digital bypass is active.

​

Internal Core Modification (The "Stealth" Method)

Ideal for operators who require the exhaust assembly to maintain a 100% factory exterior appearance.

  • The Process: The DPF section is removed from the vehicle. A heavy-duty masonry bit or chisel is used to "punch through" or drill a high-flow path through the internal ceramic substrate.

  • The Result: The exterior of the EAS box remains untouched, but exhaust gases can flow freely without triggering backpressure sensors.

​

Full Internal Removal (Hollowing Out)

The most reliable method for high-load applications in extreme Australian temperatures.

  • The Process: The exhaust housing is professionally opened, and the entire ceramic DPF core is removed (hollowed out). The unit is then cleaned of all debris and welded back together.

  • The Result: Maximises exhaust flow and significantly reduces "heat soak" within the muffler assembly, protecting the turbocharger and surrounding components.

​

Full Muffler Replacement (Straight-Through)

The preferred solution for maximum weight reduction and engine efficiency.

  • The Process: The entire aftertreatment assembly is removed and replaced with a standard heavy-duty "straight-through" muffler or custom exhaust pipe.

  • The Result: Significant weight savings (often 80–120kg) and the lowest possible Exhaust Gas Temperatures (EGTs).

​​

Important Installation Notes

  • Order of Operations: Always install and verify the EMRT Emulator is functioning correctly before performing physical modifications. This also ensures to check the ECU is not already in a hard-lock derate.

  • Sensor Protection: When hollowing out a box, ensure the ports for the NOx sensors and Temperature sensors are kept clean. Even when emulated, the physical plugs must remain sealed.

  • Professional Service: We strongly recommend physical modifications be performed by a qualified exhaust specialist or heavy-vehicle mechanic.

Disclaimer 

 

The information provided on this page is intended as a technical guide only. EMRT DiagTech Tools Pty Ltd provides no warranty, express or implied, regarding the physical modification of exhaust systems.

​

Modification of emissions control equipment is subject to strict Federal and State laws within Australia and new Zealand. These modifications are intended strictly for off-road, closed-circuit, or export use only. It is the responsibility of the vehicle owner/operator to ensure compliance with all relevant environmental and road safety regulations.

​

For full details on our legal terms, please visit our Regulatory & Compliance Information.

bottom of page