Construction Machine · Sunward

Sunward Construction Machinery Tuning and ECU Remapping

We remap the ECU of Sunward construction machines to improve power, torque and fuel efficiency.

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ECU software work on a Scania truck and a Doosan excavator in the workshop

On Sunward machines the engine control unit is recalibrated from the machine's own original file. Services with verified solutions for Sunward in our library: Stage 1 Remap, DPF Delete, EGR Delete and AdBlue / SCR Delete.

The ECU type varies with model year and engine; send us a photo of the ECU label or the machine details and we will confirm exactly which services are possible.

The result depends on the machine and the engine. The calibration respects the limits of the engine, cooling and hydraulic system, and the original software is archived.

Services available for Sunward machines

Stage 1 Remap

Software that optimises the engine's power and torque maps within safe limits.

DPF Delete

Software deactivation of the diesel particulate filter (DPF/FAP) functions and fault codes.

EGR Delete

Software deactivation of the exhaust gas recirculation (EGR) valve control and fault codes.

AdBlue / SCR Delete

Software deactivation of the AdBlue/SCR dosing system and its fault/warning functions.

Sunward fault solutions

Sunward Construction Machine DPF Fault Solution Sunward Construction Machine EGR Fault Solution Sunward Construction Machine AdBlue Fault Solution

Frequently asked questions

Which software services are available for Sunward machines?

Services with verified solutions for Sunward in our library: Stage 1 Remap, DPF Delete, EGR Delete and AdBlue / SCR Delete. We confirm which of them apply to your machine from the file, according to its ECU type.

How do I find out which ECU my Sunward machine has?

The exact type is read from the label on the ECU or with a diagnostic tool; a photo of the label is enough.

Can the original software be restored afterwards?

Yes. The original software is archived and your Sunward machine can be returned to factory settings on request.

How long does the job take?

Most ECUs are read and written through the diagnostic socket and the job is finished the same day; some units are removed and processed on the bench.

Will a reset clear the AdBlue warning?

After the tank is refilled, the warning goes out by itself on most machines. If it stays on after topping up, the cause is usually the NOx sensor, pump, heater or level sensor; a reset alone does not last, and the warning and power reduction return. The fault memory is read first and the source identified.

The machine keeps asking for a parked regeneration. What does that mean?

It means the soot load in the filter is rising faster than normal. The reason is usually the way the machine is used (long idling, low load) or a fault in the injectors, EGR or differential pressure sensor. Rather than starting regeneration again and again, the cause needs to be diagnosed.

The machine is losing coolant. Could it be related to the EGR?

It could. When the EGR cooler leaks internally, coolant passes to the exhaust side; coolant drops without any visible leak and white smoke may come from the exhaust. This is a mechanical fault and software does not fix it; the cooler is repaired or replaced. The software solution is for EGR faults caused by the valve and sensors.

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For workshops

Prepare this file in your own workshop: ECU Prime

ECU Prime is chiptuning software that recognises the original ECU file you read with your tool and applies the operation you choose. The checksum is corrected in the same flow.

How the file service works Chiptuning software Online ECU file service Free ECU file identification