F90B 1.8L MODELS 2017+ PERFORMANCE ECU TUNING 30HP GAIN

2017+ Yamaha F90B OUTBOARD 1.8 Liter 4 CYLINDER, 4-stroke engine.

Unlock your Yamaha F90B 1.8L 4 CYLINDER,  4-stroke engine

With this flash, it will make 120 horsepower. 

Peak power is made at 5500-6500 RPM.  Adjust your prop pitch accordingly. 

The fuel and ignition curve is optimized for 89 octane (95 EU for outside North America) or better fuel, Torque limiters are raised to a safe level. Electronic throttle bodies are controlled to allow 100% air flow when present. Often manufacturers will use the exact same engine for multiple horsepower models and simply detune them for the lower HP models.

After online purchase, you will receive an email with your order confirmation and shipping instructions. 

You are responsible for shipping the ECU to us. The free shipping service is for the return shipping to you.