| Machine | Komatsu D65PX (low-ground-pressure crawler dozer) |
|---|---|
| ECU | Cummins CM2250 |
| Solution | Eco + DPF off* + EGR off* |
| Read / write | Remote, via Cummins diagnostic software |
The situation
A dozer pushes material for hours at high load, then idles, reverses and pushes again. That duty cycle is hard on the after-treatment: soot load builds up, regenerations interrupt the work, and a fouled EGR valve costs response exactly when the blade is full.
For a machine in earthworks, fuel per working hour matters as much as power. An Eco calibration is the right tool here – more efficient combustion in the load range the dozer actually uses, not more peak power.
What we did
The CM2250 stayed in the machine. The job was done remotely: the file was developed for the software version on the ECU and written through the Cummins diagnostic software in a remote session.
- Eco: calibration adjusted for efficient combustion under load – steady torque on the blade at lower fuel use per working hour.
- DPF: regeneration logic disabled, back-pressure model and sensors neutralised.
- EGR: valve closed in software – clean intake, no recirculated soot, stable combustion temperatures.
Related DTCs handled and the file written through the diagnostic software.
The result
No forced regenerations, no EGR fouling and an engine that responds the same way at the end of the day as at the start. The remote process kept downtime to a minimum – the dozer stayed on site. For contractors with machines spread over several sites, this is the fastest way to a new file on the CM2250.
Need a file for this machine?
Byte Performance develops files individually for engine, ECU and software version. Dealers get access to the full database, dealer pricing and direct engineer support. Become a dealer or ask about a machine.
* Emission-related solutions (DPF, EGR, AdBlue/SCR) are intended for off-road, agricultural, export and motorsport use only, where permitted by local law. The operator is responsible for legal use in their market.
