Yamaha MT-09
- ECU
- 2SC-8591A-90
- ECU maker
- —
- Model years
- 2017
- Stock firmware
- Included · 1 MB
What you can tune
87 calibration tables · 0 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 |
|---|---|---|
| MAP Cyl - 1 50x50 | Fuel | 1 |
| MAP Cyl - # | Fuel | 2 |
| TPS Cyl - 1 50x37 | Fuel | 1 |
| TPS Cyl - # | Fuel | 2 |
| TPS vs MAP 50x50 | Fuel | 1 |
| Delta TPS vs RPM Neutral 11x11 | Fuel | 1 |
| Delta TPS vs RPM Gear 1,2 | Fuel | 1 |
| Delta TPS vs RPM Gear 3,4,5,6 | Fuel | 1 |
| Primary INJ. Adv. 17x10 | Fuel | 1 |
| Rev Limit Fuel | Fuel | 1 |
| Rev Limit Fuel 2 | Fuel | 1 |
| Disable INJ. Decel cut Below | Fuel | 1 |
| Disable INJ. Decel cut Abowe | Fuel | 1 |
| TPS# Mode STD | Ignition | 2 |
| TPS# Mode A | Ignition | 2 |
| TPS# Mode B | Ignition | 2 |
| IGN. Neutral 36x23 | Ignition | 1 |
| IGN. MAP## | Ignition | 9 |
| IGN. Offset Cyl#2 36x23 | Ignition | 1 |
| IGN. Offset Cyl#3 | Ignition | 1 |
| Volt Dwell | Ignition | 1 |
| Volt Dwell 2? | Ignition | 1 |
| ETV Base STD APS1 Map#0 30x30 | Throttle / ETV | 1 |
| ETV Base STD APS# Map## | Throttle / ETV | 13 |
| ETV Base A APS1 Map#0 30x30 | Throttle / ETV | 1 |
| ETV Base A APS# Map## | Throttle / ETV | 13 |
| ETV Base B APS1 Map#0 30x30 | Throttle / ETV | 1 |
| ETV Base B APS# Map## | Throttle / ETV | 13 |
| ETV Decel Mode STD APS1=APS2 | Throttle / ETV | 1 |
| ETV Decel Mode A APS1=APS2 | Throttle / ETV | 1 |
| ETV Decel Mode B APS1=APS2 | Throttle / ETV | 1 |
| ETV Gear Map# APS1=APS2 | Throttle / ETV | 1 |
| ECT vs. RPM Idle speed | Idle | 1 |
| Pressure Comp | Idle | 1 |
| Fan Temps | Temperature | 1 |
| Speed | Limiters | 1 |
| ECU Serial Number | Other | 1 |
| CHECKSUM | Other | 1 |
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-09 2017?
This verified definition exposes 87 calibration tables — including fuel, ignition, throttle, limiters, idle and temperature maps — plus 0 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-09 definition cover?
The 2SC-8591A-90. 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.