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Construction Machine · Caterpillar

Caterpillar 320 Excavator ECU Software Solutions

The Caterpillar 320 is Caterpillar's 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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Caterpillar 320 technical data

Each row states where the data comes from. “Manufacturer data” is the factory figure published by the manufacturer; figures after a remap are shown only where we have our own measurements and records. Estimated figures are not guaranteed results.

EnginePowerTorqueECURead / writeVerification
320 GC Cat C4.4
4,4 L · Stage V		 150 bhp — — — Manufacturer data (factory figure)
320 Cat C4.4
4,4 L · Stage V		 176 bhp — — — Manufacturer data (factory figure)

ECU and compatibility for the Caterpillar 320

Services with a verified solution for Caterpillar in our library: Stage 1 Remap and AdBlue / SCR Delete. The control units we work on in Caterpillar machines include CATERPILLAR A5E2V2I1, BOSCH EDC17C49, DENSO DCU and BOSCH EDC17CV54. The same model can carry a different ECU depending on build year and engine option, so we confirm compatibility for the Caterpillar 320 from a photo of the ECU label or from the file read out.

Services available for Caterpillar (excavator)

Stage 1 Remap

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

AdBlue / SCR Delete

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

ECU models used in Caterpillar machines

CATERPILLAR A5E2V2I1BOSCH EDC17C49DENSO DCUBOSCH EDC17CV54BOSCH MD1CE100

Frequently asked questions

Which software services are available for the Caterpillar 320?
Services with a verified solution for Caterpillar in our library: Stage 1 Remap and AdBlue / SCR Delete. We confirm on the file which of them apply to the ECU fitted to your Caterpillar 320.
How do I find out which ECU my Caterpillar 320 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 Caterpillar 320 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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  • Checksum corrected
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