Stage 2 Calibration Upgrade — Yamaha YZF-R1

Stage 2 assumes the restrictive hardware is gone. Send us the spec, we build the file, and you flash it with the handheld tool you already own.

Hardware this file expects

• Full system or slip-on with the catalytic converter removed
• High-flow air filter
• Intake air temperature sensor relocated out of the airbox heat

What changes over Stage 1

• Fuel and ignition retimed for the freer-breathing exhaust
• Airbox flap strategy revised
• Torque limits in the lower gears raised
• Pit-lane limiter and launch strategy exposed where the platform supports it

This is a calibration upgrade only — no new hardware ships with it.