Yamaha R9 ECU Programming – GYTR Data Calibration

Factory-level performance. No compromise.

This service converts your original Yamaha R9 ECU to full GYTR data specification using the official YEC/GYTR dataset (BK0-8591A-C0).

By reprogramming the OEM ECU, the system operates on the same performance level as a genuine GYTR kit ECU – without hardware replacement.

SYSTEM OVERVIEW

You send in your original ECU.
We reprogram it to GYTR data specification.

The result is a fully transformed control unit with race-proven calibration, optimized for performance applications.

KEY BENEFITS

• GYTR / YEC factory data calibration
• Significantly improved throttle response
• Optimized ignition and fuel mapping
• Enhanced rideability and control
• No need for additional hardware

PERFORMANCE CHARACTERISTICS

• More direct and precise throttle input
• Improved power delivery across the RPM range
• Removal of OEM restrictions
• Consistent performance under load

TECHNICAL LIMITATION

This model does not allow fuel adjustment via Yamaha FI Matching.

For this reason, we offer an additional custom dyno-based optimization to fine-tune fueling and achieve maximum performance.

UPGRADE OPTION

• Optional dyno tuning available
• Individual fuel calibration based on your setup
• Recommended for exhaust and intake modifications

IMPORTANT NOTICE

This modification is intended for racing use only.
By installing this ECU calibration, the road approval (street legality) of the vehicle is void.

After purchase, you will receive a configuration form.
This form must be completed with your exact vehicle setup (exhaust, intake, modifications) to ensure correct calibration.

PROCESS

1. Send us your original ECU
2. Programming to GYTR dataset
3. Optional dyno optimization
4. Ready-to-install, plug & play