Yamaha F350 5.3L V8 Nizpro 400 ECO ECU Tune

Unlock improved cruising efficiency and stronger real-world drivability from your Yamaha F350 5.3L V8 with the Nizpro 400 ECO calibration, designed to improve fuel efficiency while maintaining strong mid-range performance and load carrying capability.

This calibration is ideal for owners who want better range, cleaner cruising behavior, and improved everyday usability without stepping up to a more aggressive performance-first tune.

Performance Data
Tune Type: 400 ECO
RPM Limiter: 6200 RPM
Minimum Fuel Required: 87 Octane

What this tune improves

The Nizpro 400 ECO calibration is built to deliver more efficient and more usable real-world performance than stock.

Real-world improvements include:

• Improved cruising efficiency
• Better throttle response
• Stronger mid-range drivability
• Smoother performance under load
• More efficient everyday boating

Compatible Engines

This product is for Yamaha F350 5.3L V8 applications from 2010–2019.

ECU Compatibility
Compatible ECU part numbers may include:

• 6AW-01
• 6AW-20
• 6AW-41
• 6AW-42
• 6AW-50
• 6AW-51
• Not Listed / Unsure

How to order

• Select your Service Type
• Select your ECU Part Number (Abridged)
• Complete checkout
• Mail in your ECU or schedule local mobile service if eligible

Service Options

Mail-In ECU Service
Nationwide service available.

Local Mobile Flash Service (Florida)
Available for qualifying local appointments within 40 miles of Ormond Beach, FL.

Important before ordering

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

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