Yamaha XSR900
- ECU
- B90-8591A-60
- ECU maker
- —
- Model years
- 2016-2021
- Stock firmware
- Included · 1 MB
What you can tune
96 calibration tables · 0 scalars · 56 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 | Fuel | 1 |
| Injector Timing | Fuel | 1 |
| IAP Cyl# | Fuel | 3 |
| TPS Cyl# | Fuel | 3 |
| IAP vs TPS Balance | Fuel | 1 |
| Accel Enrich. Neutral | Fuel | 1 |
| Accel Enrich. Gear1-2 | Fuel | 1 |
| Accel Enrich. Gear3-4-5-6 | Fuel | 1 |
| Neutral | Fuel | 1 |
| Gear# | Fuel | 6 |
| Ignition map by gear STD | Ignition | 1 |
| Ignition map by gear A | Ignition | 1 |
| Ignition map by gear B | Ignition | 1 |
| Ignition ## | Ignition | 10 |
| Igntion Cyl# Offset | Ignition | 2 |
| ETV Map## STD | Throttle / ETV | 14 |
| ETV Map ## A | Throttle / ETV | 14 |
| ETV Map ## B | Throttle / ETV | 14 |
| # Map Selector # | Throttle / ETV | 1 |
| Limiter mode STD | Throttle / ETV | 1 |
| Limiter mode A | Throttle / ETV | 1 |
| Limietr mode B | Throttle / ETV | 1 |
| ETV Decel STD | Throttle / ETV | 1 |
| ETV Decel STD MS1 | Throttle / ETV | 1 |
| ETV Decel A | Throttle / ETV | 1 |
| ETV Decel A MS1 | Throttle / ETV | 1 |
| ETV Decel B | Throttle / ETV | 1 |
| ETV Decel B MS1 | Throttle / ETV | 1 |
| Idle speed temperature Compensation | Idle | 1 |
| Idle speed pressure compensation | Idle | 1 |
| Fan | Temperature | 1 |
| Limiter ## | Limiters | 3 |
| Coil Charge normal | Other · Compensation Coil Charge Compensation | 1 |
| Coil Charge safe | Other · Compensation Coil Charge Compensation | 1 |
| Checksum | Other · Rom Info | 1 |
| Version | Other · Rom Info | 1 |
56 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 XSR900 2016-2021?
This verified definition exposes 96 calibration tables — including fuel, ignition, throttle, limiters, idle, other · compensation coil charge compensation, other · rom info and temperature maps — plus 0 adjustable scalars and 56 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 XSR900 definition cover?
The B90-8591A-60. 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.