Construction Machine · Sunward

Sunward SWE 90UF Mini Excavator Tuning and Power Upgrade

Name: Sunward SWE 90UF Mini Excavator Tuning and Power Upgrade
Brand: Sunward

The Sunward SWE 90UF is Sunward's midi excavator. The engine control unit (ECU) software is recalibrated on the machine's own original file; the original software is backed up.

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Sunward SWE 90UF power remap

A power remap on the Sunward SWE 90UF recalibrates the fuel quantity, injection timing and torque limiter maps. On compact machines the engine runs the hydraulic pump close to its limit; with more torque in reserve, rpm drops less when digging and travelling together.

Sunward SWE 90UF DPF, EGR and AdBlue fault solution

Mini excavators work in short cycles with frequent stops and long idling; in these conditions the particulate filter (DPF) cannot clean itself and blocks. With an EGR fault or emission sensor errors the machine enters limp mode. The cause is diagnosed first; the software solution is applied according to the ECU type.

Sunward SWE 90UF DPF Fault Solution Sunward SWE 90UF EGR Fault Solution Sunward SWE 90UF AdBlue Fault Solution

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

ECU and compatibility for the Sunward SWE 90UF

Services with a verified solution for Sunward in our library: Stage 1 Remap, DPF Delete, EGR Delete and AdBlue / SCR Delete. The same model can carry a different ECU depending on build year and engine option, so we confirm compatibility for the Sunward SWE 90UF from a photo of the ECU label or from the file read out.

Where is the difference noticed on the Sunward SWE 90UF?

Trenching and utility work
Working with hydraulic attachments such as breakers and augers
Digging and travelling at the same time

Services available for Sunward (mini excavator)

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.

Frequently asked questions

Which software services are available for the Sunward SWE 90UF?

Services with a verified solution for Sunward in our library: Stage 1 Remap, DPF Delete, EGR Delete and AdBlue / SCR Delete. We confirm on the file which of them apply to the ECU fitted to your Sunward SWE 90UF.

How much power does the Sunward SWE 90UF gain with a remap?

The gain depends on the engine option, the ECU type and the machine's power level within its range. Rather than quote a fixed figure, we read the original file first and tell you what increase is possible.

How do I find out which ECU my Sunward SWE 90UF has?

The exact type is read from the label on the ECU or with a diagnostic tool. A photo of the label and the model year of the machine are enough.

How long does the job take, and can it be done on site?

Most ECUs are read and written through the diagnostic socket and the job is completed the same day; some units are removed and worked on the bench. Contact us for on-site service.

Can the original software be restored?

Yes. The original software is archived and the Sunward SWE 90UF can be returned to its factory setting on request.

Why does the machine cut power when there is an AdBlue fault?

When the emission system detects a fault, the ECU first gives a warning; if the fault is not fixed it limits torque and engine speed in stages, and at the final stage the machine runs at idle only. This is how the system is designed to behave. Power returns once the cause is fixed or a software solution matching the ECU type is applied.

Why does DPF regeneration not complete in the field or on site?

Regeneration needs the exhaust temperature to stay high for a while; low load, idling and short work cycles do not provide that. Faults in the differential pressure sensor, the EGR or the injectors also stop regeneration. The soot load and sensor values are read first; depending on the cause we recommend a forced regeneration, cleaning or a software solution.

Does the EGR job give the machine more power?

The EGR job is not a power remap; no power gain should be expected from it alone. Because the loss of pull and the power reduction caused by a faulty EGR disappear, the machine returns to its factory output. If more power is wanted, a power remap is applied separately.

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