Yamaha MT-03
- ECU
- BR5-H591A-30
- ECU maker
- —
- Model years
- 2018-2019
- Stock firmware
- Included · 1 MB
What you can tune
43 calibration tables · 3 scalars · 7 patches & flags — all editable in the browser.
Getting started
Start from the included stock firmware, or upload your own BIN read.
Heat-mapped tables, editable 2D/3D graphs, cell math, AI auto-tune, and compare against other reads.
Download a standard modified BIN and flash it with your own hardware and software.
Calibration maps
| Map | Group | Tables |
|---|---|---|
| Decel Fuel Cut Low | Fuel | 1 |
| Decel Fuel Cut High | Fuel | 1 |
| Cyl # | Fuel | 4 |
| Gear N | Fuel | 1 |
| Gear #-# | Fuel | 2 |
| Fuel Soft/Hard RPM Limit | Fuel | 1 |
| Fuel Soft/Hard RPM Limit by Gear | Fuel | 1 |
| Ignition map# index Cyl# | Ignition | 2 |
| Ignition Gear N Cyl# | Ignition | 2 |
| Ignition map# # | Ignition | 18 |
| Warmup Ignition Trim by ECT | Ignition | 1 |
| Cyl # | Ignition | 2 |
| Ignition RPM Limit | Ignition | 1 |
| Fan | Temperature | 1 |
| Quick Shift Timimg Map GEAR | Gearbox | 1 |
| ECT Sensor Scaling | Sensors & Axis | 1 |
| IAT Sensor Scaling | Sensors & Axis | 1 |
| Diagnostic Trouble Code Table | Other · ECU Settings | 1 |
| Denso ID | Other | 1 |
3 adjustable scalars (rev limits, thresholds, corrections)
| QS Minium RPM |
| Active delay |
| Next shift delay |
7 patches & flags (toggle features on/off)
MotoEditor edits the calibration and exports a standard BIN — reading and flashing the ECU is handled by your own flashing hardware and software.
Frequently asked
What can I tune on the Yamaha MT-03 2018-2019?
This verified definition exposes 43 calibration tables — including fuel, ignition, gearbox, other · ecu settings, sensors & axis and temperature maps — plus 3 adjustable scalars and 7 feature patches, all editable in your browser.
Do I need to remove or open the ECU?
No. MotoEditor edits the calibration and exports a standard BIN. Reading the stock file from the bike and writing it back is done with your own flashing hardware and software.
Which ECU does this Yamaha MT-03 definition cover?
The BR5-H591A-30. Every map address and scaling is verified against the stock firmware, so what you edit matches the real calibration.
Can I use my own stock file?
Yes. Start a project from your bike's stock BIN and your changes apply to it, or begin from the built-in reference — either way you export a standard BIN.
How much does access cost?
MotoEditor is a single subscription that unlocks the browser editor for this definition and every other bike in the library — no per-project or per-download fees.