Yamaha Tracer 900
- ECU
- B5U-8591A-01
- ECU maker
- —
- Model years
- 2021-2022
- Stock firmware
- Included · 1.94 MB
What you can tune
76 calibration tables · 0 scalars · 6 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 |
|---|---|---|
| Cyl - # | Fuel | 6 |
| MAP vs TPS | Fuel | 1 |
| Lambda IAP ## | Fuel | 2 |
| Lambda TPS ## | Fuel | 2 |
| Lambda Full Load | Fuel | 1 |
| Gear # | Fuel | 7 |
| Ignition map## | Ignition | 8 |
| Coil Charge Compensation | Ignition | 1 |
| Map## | Throttle / ETV | 28 |
| Throttle Limiter | Throttle / ETV | 1 |
| Engine Brake Request Factory | Torque | 1 |
| Optimal Engine Moment # | Torque | 10 |
| Engine Idle vs Temperature | Idle | 1 |
| Fan Control | Temperature | 1 |
| Rpm Limiter ## | Limiters | 3 |
| Speed Limiter | Limiters | 1 |
| Hw Version | Other · Yamaha TRACER 2021-2022 Rom Info | 1 |
| Sw Version | Other · Yamaha TRACER 2021-2022 Rom Info | 1 |
6 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 Tracer 900 2021-2022?
This verified definition exposes 76 calibration tables — including fuel, ignition, throttle, limiters, idle, other · yamaha tracer 2021-2022 rom info, temperature and torque maps — plus 0 adjustable scalars and 6 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 Tracer 900 definition cover?
The B5U-8591A-01. 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.