F250 4.2L V6
332HO DIY KIT
2010 to 2021

USD $1,699.00USD $4,396.00

Go Further, Faster with Nizpro, all day, every day...

It's all about optimising performance.

The Nizpro Marine Performance Repower is both a cost and time effective, simple way of turning your engine into a 332hp monster: improving hole shot, mid-range acceleration and top speed. Or just cruise at your normal speed with lower revs, less engine noise using less fuel.

A Nizpro Marine Performance Repower is about optimising the performance of your engine. It’s not about turning your boat into a rocket ship – that’s what we made Nizproย 475 Lightning, 500 Bandit & 525 Outlawย ย Superchargers for!

Use the DIY Repower Kit to easily flash your ECU! Upgrading to a Nizpro Marine Performance Repower, your Yamaha F250 OFFSHORE will make 332hp with a 6,500rpm Rev Limiter and extra torque to get your boat up and out of the water faster.

Increased Power, Improved Economy & Reliability? It’s all true!

Testing: We have rigorously tested the Nizpro Marine 332HO Performance Repowers on a standard Yamaha F250 OFFSHORE engine utilizing the Nizpro Marine Endurance Test on our inhouse dyno cell. The engine passed with no adverse effects*.

The same engine has also been extensively water tested for 250+ hours to further validate the dyno results. These tests underpin the performance of the hundreds of engines currently in market using the Nizpro Marine 332HO Performanceย  Repower & are undertaken to ensure complete confidence in the Nizpro Marine 332HO Performance Repower.

*Performance Caveat:

Engine must run on Minimum 89โ€“90 MON USA grade / 95-98 RON AUS grade Octane fuel & have adhered to recommended Yamaha service intervals.ย 

 

Please note that all NIZPRO ECU Flashing Software is ONLY compatible with Windows Computers.

Suitable for

  • Yamaha OFFSHOREย  ย  ย  ย  ย  ย  2010ย  to 2021

 

*Performance Caveat:

Engine must run on Minimum 89โ€“90 MON USA grade / 95-98 RON AUS grade Octane fuel & have adhered to recommended Yamaha service intervals.ย 

STOCK YAMAHA F250 OFFSHORE VS NIZPRO 332HO Performance Repower
โ€ข Power increase to 332 hp
โ€ข 21% Torque increase to 327Ftlbs
โ€ข Nizpro Performance 6500 RPM Limiter
โ€ข Improved fuel economyย up to an average of 15.5%ย over stock

*Performance Caveat:

Engine must run on Minimum 89โ€“90 MON USA grade / 95-98 RON AUS grade Octane fuel & have adhered to recommended Yamaha service intervals.ย 

 

DIY Kit includes

  • ECU Flash Interface & USB Cable
  • AC Flash Power Supply โ€“ Region Specific
  • 12V DC Power Cable
  • Offshore V6 Flash Harness
  • 2 x 332 HO Nizpro Decals per engine
  • 1 x 332 HO Performance Repower Licence per engine
  • Nizpro Trucker Cap
  • Nizpro USB preloaded with Instructions

NIZPRO – Yamaha 4.2L V6 OFFSHORE ECU Flashing Instructions

 

*Performance Caveat:

Engine must run on Minimum 89โ€“90 MON USA grade / 95-98 RON AUS grade Octane fuel & have adhered to recommended Yamaha service intervals.ย 

I recently had the Nizpro 332HO Performance Repower with the Yamaha stock 6200rpm rev limiter installed on my Yamaha F250s by Sage from Fathom Marine and I could not be more happier with the results.

Heading offshore any day before the tune with a head swell trim tabs buried, I was averaging 1.2 MPG.

With the tune, same conditions, I am now averaging 1.5 to 1.8 mpg. The better fuel economy is what I was after and for just a bonus, I also gained some top end speed.

So if you are looking for a tune to improve your fuel economy and add extra speed, do not hesitate to do it.

I run a Pursuit 28 foot center console offshore boat and believe me itโ€™s heavy but since the tune it has made the boat a whole different machine .

Once I got the props dialed in and settled with a set of power tech four blades, that was the only change I had to make. Great work and thank you, Sage.๐Ÿ”ฅ

Brent H, North Carolina USAย  12/01/2025