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Off-road · ConstructionEngine remapping for construction machinery
A hydraulic excavator does not leave the site to visit a workshop. So we come to the site, to the depot or to the plant yard, in Belgium and in the neighbouring border regions. Powerconcept has been developing engine maps since 1995, in Nivelles, and measures its results on its own dyno.
What we do, and who for
We work for civil engineering, earthmoving and demolition companies, plant hire firms and fleet managers. The job is to read the engine ECU, save the factory file, develop a map for that specific engine, then write it back and check how it behaves. We work on injection, boost pressure and torque management, never on the emission control systems.
Travelling out is not an add-on service: it is the normal way to work on a machine. Taking an excavator or a loader off site for an abnormal load transport costs more than the work itself, and on a running site it is simply not an option. We come to you, in Belgium and in the neighbouring border regions, and the planning follows the site's.
A construction machine does not fit on a roller dyno built for cars. Validation is done through electronic readings before and after, checks on pressures and temperatures, then a loaded test with the attachment at work. The Nivelles dyno remains central to the method for development work.
- Work on site, at the depot or in the plant yard
- Factory file saved and archived: the work stays reversible
- Aimed at torque and hourly fuel use, not peak power
- Named invoice and intervention report
What an off-road map actually changes
Construction machinery sits in the off-road part of our development database, the one our configurator queries: 1,695 engine variants across 18 brands, from tractors to excavators. These are development values, not a promise for your machine.
In Stage 1, the median of our off-road database is 24 % more power, and nine variants out of ten fall between 10 and 36 %. On torque, the median is 20 %, calculated on the 1,352 variants that actually gain any.
That reservation deserves an explanation, because it matters particularly on a machine. On 315 variants in our database, the stated torque does not change although power rises: torque is capped upstream by the transmission or by the hydraulic circuit, and a serious map does not force that ceiling. The gain is then taken as revs held and power available for longer, rather than as peak torque.
On a machine, that is exactly what you want. An excavator that holds its revs when the pump asks for everything, a loader that does not run out of breath digging into a heap, a telehandler that lifts its load without the engine collapsing: the work is done at held revs, not at peak torque. On fuel, the lever exists per working hour, provided the gain is not turned into cycle rate.
Our database holds no Stage 2 data for off-road machinery. We therefore put no Stage 2 figures on this page.
How the work is carried out
It starts with a diagnostic: electronic reading of the machine, a check that no fault codes are stored, condition of the turbo, the injection system and the emission control line. A machine with a fault gets repaired before it gets remapped.
The software is read through the diagnostic socket when the ECU allows it. Otherwise it is read on the ECU, on the bench, which means removing it. That is what weighs most on downtime: we check your part number before fixing a slot.
Then comes development: injection, boost pressure and permissible torque tables are changed in progressive steps, keeping the ECU protections active and respecting the transmission and hydraulic ceiling. The file is written back to the machine, then checked through electronic readings and a loaded test.
Every job is quoted individually: the brand, the generation, the reading method, the number of machines and the location all change the actual work.
The machinery brands we work on
Three machinery manufacturers currently appear in our database with remapping data.
- Caterpillar: the best covered brand, by industrial engine family and by backhoe loader.
- JCB: loaders, telehandlers and Fastrac.
- Hitachi: ZA and ZX series hydraulic excavators.
The rest of our off-road database is agricultural, and the boundary is porous: a telehandler and a farm loader often share the same engine. If your machine is not listed, it is simply not in our database yet, which does not mean it is impossible. See tractor and agricultural remapping, or describe your machinery to us.
What we do not do, and why
At Powerconcept we neither remove nor disable any emission control system. No particulate filter, no EGR valve, no AdBlue, and the fact that a machine never uses a public road changes nothing. This is not a commercial stance, it is the law, and it also protects the value of your machinery: a non-compliant fleet is hard to resell and hard to hire out.
We do not fit tuning boxes either. A box sits between the sensors and the ECU and feeds it falsified values: the engine then works outside its tables and protections. On a machine running thousands of hours at near constant load, that is what to avoid.
We do, on the other hand, diagnose and repair SCR faults, the leading cause of downtime on a recent machine. Urea quality sensor, pump, injector, crystallised fluid, a fault logged by the ECU, then engine derating: that derating cuts available power and eventually prevents starting. Our job is to identify the failed part, replace it and bring the system back into working order with fluid that meets the standard. We are describing a repair method, not a guaranteed outcome: the real state of the system is established by the diagnostic.
Our rule fits in one sentence, and it has not changed since 1995: we work on engine calibration, never on what protects the air we breathe. DPF, EGR valve and AdBlue: where we stand
Frequently asked questions about machinery remapping
Does a remap void the manufacturer's warranty?
It does not void it automatically, but it can be held against you: a manufacturer may refuse to cover a part it considers to have failed because of the modification, usually engine and transmission. The rest remains. We keep your factory file, and the original map can be written back before a dealer visit.
Do you remove AdBlue, the DPF or the EGR valve on a construction machine?
No, never. Off-road machinery is subject to its own emission standards, and we neither remove nor disable any emission control system, on the road or off it. We do diagnose and repair SCR faults, which are the real reason the question gets asked.
My machine is derated by an AdBlue fault: can you help?
Yes, by repairing it. Derating is the ECU's normal reaction to an SCR fault: it cuts available power and eventually blocks starting. We read the fault codes to identify the part at fault, replace it and bring the system back into service with compliant fluid. What we will not do is silence the fault and leave the system out of action.
Wouldn't a tuning box be simpler on a machine?
Simpler to fit, yes. Safer, no. The box falsifies the signals the ECU receives, so the engine works outside its tables and protections, precisely where a transmission and a hydraulic circuit are under most strain. Tuning box or remapping
Why does torque not rise on some machines?
Because it is already capped upstream. On 315 variants in our off-road database, power rises without the stated torque changing: the transmission or the hydraulic circuit set a limit we do not force. The gain is then taken as revs held and power available for longer.
What about diesel use per hour?
We do not put a figure on it, because it depends on the work being done and on the operator. The lever is known: an engine that holds its revs under load stays in its efficient range and drops out of it less often. If the gain is converted into cycle rate, hourly consumption does not fall, but the volume handled rises.
Do you travel to the site?
Yes, and that is the normal case. We work on site, at the depot or in the plant yard, in Belgium and in the neighbouring border regions. The location is part of the quote, and we follow the site's planning.
Do you handle stationary industrial engines?
Our database covers industrial engine families, Caterpillar in particular, and a map does not care which chassis an engine sits in. So it is handled case by case: describe the application and the ECU part number, and we will tell you what data we hold.
A quote for your plant fleet
Give us the brand, the model and the year, and tell us how many machines are involved. We reply within one working day. For a whole fleet, see fleet remapping. See also truck and lorry remapping.