Yamaha F300 Offshore 4.2L Nizpro 315 ECO ECU Tune (A Series 2010–2021)

Unlock improved cruising efficiency and smoother real-world drivability from your Yamaha F300 Offshore 4.2L with the Nizpro 315 ECO calibration, designed to improve response, mid-range behavior, and overall efficiency while maintaining safe operation on 87 octane.

This calibration is ideal for owners who want a more efficient everyday offshore tune without stepping up to the more aggressive 332HO package. The biggest gains are in usable drivability, smoother response, and improved efficiency in typical offshore cruising conditions.

Performance Data
Stock Output: 300 HP
Tuned Output: 315 HP
Power Increase: +15 HP (+5.0%)
Tune Type: 315 ECO
RPM Limiter: 6500 RPM
Minimum Fuel Required: 87 Octane

What this tune improves

The Nizpro 315 ECO calibration is built to deliver stronger drivability and improved cruising efficiency than stock.

Real-world improvements include:

• Sharper throttle response
• Smoother acceleration under load
• Improved cruising efficiency
• Better mid-range usability
• More refined offshore drivability

This means the engine feels less lazy, more responsive, and more efficient in real-world boating conditions.

Compatible Engines

This product is for Yamaha F300 Offshore 4.2L A Series applications from 2010–2021.

ECU Compatibility

• 6CE-00, 6CE-01, 6CE-02, 6CE-04, 6CE-10, 6CE-11, 6CE-12, 6CE-13, 6JA-00

Select your ECU part number using the abridged format shown above.

If you do not see your ECU listed, select Not Listed / Unsure. We will verify compatibility before flashing.

How to order

• Select your Service Type
• Select your ECU Part Number (Abridged)
• Complete checkout
• If you selected mail-in service, ship your ECU using the instructions provided after purchase
• We flash and return it quickly so you can get back on the water

Service Options

Mail-In ECU Service
For customers anywhere in the U.S. Remove your ECU, ship it to us, and we will flash and return it.

Local Mobile Flash Service (Florida)
We will pull your ECU for you and flash it on site. Available for qualifying local appointments within 40 miles of Ormond Beach, FL.

Important before ordering

Please verify your engine model and ECU part number before purchasing. Every order is reviewed to ensure correct ECU compatibility before flashing.

Notes
Performance results can vary based on hull, prop, load, fuel quality, and operating conditions.