Why tune
What tuning actually does.
Every engine leaves the factory set up to suit dozens of markets and machines — rarely the exact work you do. Tuning matches your machine to the job, done and tested by a local AgMac dealer.
Find your nearest dealerThe basics
What is ECU tuning?
Modern machines are run by an engine control unit (ECU) — the computer that decides how much fuel, boost and torque the engine delivers. Tuning (also called remapping) safely adjusts that software so the engine is set up for the work you actually do, rather than a one-size-fits-all factory setting.
Your dealer reads the factory settings, calibrates each parameter — fuelling, boost, torque limits and more — then writes the updated file back to the machine. It’s precise, reversible work, not a blanket power increase.
- Custom-calibrated to your make, model and workload
- Works with the factory ECU — not a plug-in box or chip
- Your original file is always saved, so it can go back to stock
- No guesswork — every setting is matched to your machine and workload
How it works
Three steps, usually on your site.
Read & back up
Your dealer connects to the machine, reads the factory file and keeps a safe copy, so it can always be put back to standard.
Calibrate
Each parameter is tuned to your specific engine and the work you do — balancing power and economy without over-stressing the engine.
Write & test
The new file is written back and checked before you take the machine back to work. Most jobs are done on-site.
The gains
What tuning does for your machine.
Pulls harder
Usable pulling power lower in the rev range means less gear-hunting and less labouring — the machine holds the job instead of bogging down under load.
Burns less diesel
An engine that isn’t straining burns less diesel for the same work. Even a few percent adds up quickly across a season of hours.
Covers more ground
Better response and drivability turn into real output — more hectares, more hours and more loads from the same machine and the same day.
Runs cooler under load
An engine calibrated to run efficiently can run cooler under load. Lower exhaust and coolant temperatures mean less heat stress on the engine and driveline when the machine is worked hard.
The payback
Two ways a tune pays for itself.
Save on fuel. An engine matched to its work burns less diesel for the same output. Carry on exactly as you do now and the saving shows up at the bowser — for many operators, the fuel saving alone covers the cost of the tune.
Or save time. Put the extra power and ground speed to work instead, and you cover more ground, move more loads or finish the paddock sooner. The same hours turn into more output.
Most operators land somewhere in between, taking a little of both. Your dealer can help you work out which makes more sense for your operation.
- Fuel saving on the same workload — often enough to pay for the tune
- Or more work done in the same hours
- Less time in the paddock or on site per job
- Realistic figures from your dealer for your gear
Emissions systems
Emissions faults, diagnosed and fixed.
As well as tuning for performance, AgMac dealers can diagnose and repair emissions-system faults. Modern diesel emissions equipment — DPFs, EGR and the sensors around them — can throw fault codes, block up or drop a machine into limp mode, costing you time and productivity right when you can least afford it.
Your dealer reads the faults, gets to the cause and puts the system back to proper working order, so the machine runs as it should. If you’ve got a warning light you can’t clear or a machine stuck in limp mode, that’s exactly the sort of thing we can help with.
Peace of mind
Why it’s safe.
Every modern machine runs on its own electronic control units, and those computers decide how much fuelling, boost and torque the engine is allowed to deliver. There are two ways to change what they allow. One is to fit an external module between the computer and the engine that feeds it altered readings to coax out more power. The other — the approach AgMac dealers take — is to recalibrate the factory software itself, adjusting the actual figures the manufacturer set and staying within safe engineering limits.
Recalibrating the genuine software is what makes the result predictable and repeatable, and it’s far from unusual: makers routinely take one engine and sell it at several different outputs simply by loading a different calibration. Tuning applies that same idea to a machine you already own — matched to the work you put it through, and at a fraction of the cost of stepping up to a higher-output model.
- Recalibrates the genuine factory ECU — no external box feeding it false readings
- Every parameter set within safe limits, not just turned up
- Your factory file saved, so it can be reverted
- Tested before the machine goes back to work
Warranty
Backed by testing, and warranted.
Every calibration AgMac dealers use has been developed and proven over extensive testing before it’s offered on a customer’s machine, and the tuning work itself is warranted. That cover is our own and sits alongside your manufacturer’s factory warranty rather than replacing it.
Any change to an engine’s software can have a bearing on a factory warranty, so your dealer will walk you through exactly what tuning means for your machine before anything is done — and because your original file is always kept, the machine can be returned to standard at any time.
Common questions
Before you tune.
Is tuning safe for my engine?
Done properly, your dealer recalibrates the genuine factory ECU and sets each parameter within safe limits to suit your machine rather than simply maximising numbers. Your original file is always saved so the machine can be returned to stock at any time.
Will it affect my manufacturer warranty?
Tuning changes your engine’s software, and any such change can have a bearing on a manufacturer’s warranty. We keep your original factory file so the machine can be returned to stock, but your dealer will talk you through what tuning means for your particular machine before you commit.
How long will my machine be off the job?
Most tuning is done on-site through the machine’s diagnostic port, often within a few hours, so the machine is rarely out of action for long.
Isn’t this just a plug-in box or chip?
No. A box or chip sits on top of the factory system and feeds it altered signals. AgMac dealers change the actual software in the ECU and calibrate it to your machine — more precise, and tailored to the work you do.
Can you fix an emissions fault or limp mode?
Yes. As well as performance tuning, our dealers can diagnose and repair emissions-system faults — fault codes, blocked filters and limp mode — to get the machine running properly again.
What sort of gains will I actually see?
It depends on the machine, its condition and how it’s used. Your dealer will give you realistic figures for your gear — and can often measure the difference before and after.
See what’s possible for your machine.
Your nearest dealer will talk you through realistic gains for your gear.
Results vary by machine, condition and how it’s used. Figures quoted by dealers are indicative — your dealer will talk you through what’s realistic for your gear.