Unlock More Power from Your Yamaha Outboard with NIZPRO Tuning at American Marine

Long Island's Newest NIZPRO Yamaha Outboard Tuning Center Is Now Accepting Appointments!

Is your Yamaha outboard delivering all the performance it's capable of? You might be surprised how much additional horsepower, torque, and acceleration could be available without replacing your engine.

American Marine, located in Commack, New York, is excited to announce that we're now offering NIZPRO Yamaha outboard ECU performance tuning!

Whether you're looking for quicker acceleration, stronger midrange power, or increased top-end speed, NIZPRO tuning can help unlock the potential of compatible Yamaha outboards.

And the best part? We have tuning appointments available now!

What Is NIZPRO Yamaha Outboard Tuning?

NIZPRO is known for developing performance ECU calibrations for Yamaha four-stroke outboard engines.

Your engine's Electronic Control Unit (ECU) controls important operating parameters, including ignition timing, fuel delivery, and engine speed limits.

NIZPRO develops specialized ECU calibrations designed to optimize engine performance on compatible Yamaha models.

Depending on your engine, the result can include:

• Increased Horsepower: Unlock additional power from your existing outboard.
• Improved Acceleration: Get on plane faster with stronger throttle response.
• Increased Torque: Enjoy better pulling power and midrange performance.
• Higher Top-Speed Potential: Experience additional performance when your hull, propeller, and engine setup allow.
• Improved Cruising Performance: Some owners report better efficiency at certain operating speeds.

Unlike traditional engine performance upgrades, ECU tuning generally doesn't require extensive mechanical modifications.

Real-World NIZPRO Performance Results

Don't just take our word for it. Published manufacturer testing and independent owner reports provide examples of what NIZPRO tuning can accomplish.

Key West 239FS with Yamaha F250XB

One particularly interesting report comes from a Key West 239FS owner who installed a NIZPRO tune on a Yamaha F250XB.

The owner reported:

Before NIZPRO Tuning:

• Top speed: Approximately 46–47 MPH
• Cruising fuel economy: Approximately 2.4–2.7 MPG

After NIZPRO Tuning:

• Top speed: Approximately 49–51 MPH
• Reported cruising fuel economy: Approximately 3.9–4.2 MPG at a comparable cruising speed

That's a reported increase of approximately 3–5 MPH in top-end performance!

For Key West owners, this is an especially interesting example of the performance potential of Yamaha ECU tuning.

Source: Key West Boats owner forum. These are individual owner-reported results, not independently controlled test results. Differences in loading, conditions, and measurement methods may affect comparisons.

Yamaha F250 — NIZPRO 332HO Performance Tune

NIZPRO has developed a performance calibration for compatible Yamaha 4.2-liter V6 outboards, with manufacturer-reported output reaching approximately 332 horsepower in its testing.

This illustrates the potential for substantial horsepower gains on certain Yamaha engine platforms.

Actual output and compatibility depend on the specific engine and calibration.

Yamaha 250 — Skeeter Bass Boat Performance Report

In an independent video review published in March 2026, a Skeeter bass boat equipped with a Yamaha 250 reportedly increased its top speed from approximately 70 MPH to nearly 75 MPH following NIZPRO tuning.

The review also described stronger acceleration and improved midrange response.

These results are examples, not guaranteed performance increases.

NIZPRO Yamaha Tuning Pricing

At American Marine, we're offering straightforward retail pricing for qualifying Yamaha engines.

Yamaha OutboardTuning PriceSelect Yamaha F50–F130$745 per motorSelect Yamaha F150–F300$949 per motorYamaha 5.3L V8 F300–F350$1,499 per motor

Pricing is subject to engine compatibility and tune availability. Additional service, travel, installation, or shipping charges may apply.

Special Discounts for Multiple Engines!

Have twin or triple Yamaha outboards? We've got even better news.

Save 20% on your second motor and 30% on your third motor!

For example, three qualifying Yamaha V6 outboards at $949 each:

• First motor: $949
• Second motor (20% off): $759.20
• Third motor (30% off): $664.30

Total: $2,372.50

That's a savings of $474.50 compared with regular retail tuning prices!

Discounts apply to additional qualifying motors tuned together on the same boat.

Three Convenient Ways to Get Your Yamaha Tuned

We understand that getting your boat to a service facility isn't always convenient. That's why American Marine offers three tuning options.

1. Bring Your Boat to American Marine

Visit our Commack facility and let our team handle your tuning service.

2. Mobile NIZPRO Tuning

Can't bring the boat to us? Ask about having our team come to your location.

An additional travel fee applies to mobile tuning.

3. Ship Us Your ECU

For qualifying applications, you can remove and ship your ECU to American Marine for tuning. Contact us first for compatibility and shipping instructions.

Why Choose American Marine?

American Marine has been serving Long Island's boating community since 1972.

As an authorized Yamaha outboard dealer and service center, we understand the engines we're working with and the needs of local boaters.

Whether you're running a Key West center console, offshore fishing boat, family cruiser, or performance-oriented vessel, our team can help you determine whether NIZPRO tuning makes sense for your setup.

We can also discuss your current propeller, engine performance, and operating RPM to help identify opportunities for improvement.

Is NIZPRO Tuning Right for Your Yamaha?

Not every Yamaha outboard is eligible for every tune, and not every boat will experience the same performance improvements.

Before scheduling, we'll want to know your Yamaha model, horsepower, year, and current performance.

It's also important to understand that aftermarket ECU tuning may affect or void your Yamaha manufacturer's warranty and may be restricted for certain applications under applicable emissions regulations. American Marine will discuss compatibility and relevant considerations before proceeding.

Schedule Your NIZPRO Tuning Appointment Today!

Our tuning schedule has openings, and now is a great time to get your Yamaha ready for your next boating season!

Whether you have one engine, twins, or triples, contact American Marine to discuss your tuning options and available appointments.

American Marine

2161 Jericho Turnpike

Commack, NY 11725

Call: 631-543-6433

More horsepower. Stronger acceleration. Better performance. Discover what your Yamaha can do with NIZPRO tuning at American Marine!

Disclaimer: NIZPRO tuning is an aftermarket performance modification. Performance results vary depending on engine model, tune, vessel configuration, propeller, load, and operating conditions. Modifications may affect warranty coverage, engine longevity, emissions compliance, or regulatory eligibility. Published results referenced above are manufacturer or third-party reports and are not guarantees of performance.