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 Nizpro 450s Superchargers for!

Use the DIY Repower Kit to easily flash your ECU! Upgrading to a Nizpro Marine Performance Repower, your Yamaha 225hp SHO will make 332hp with extra torque through the rev range 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 repower on a standard Yamaha 225hp SHO 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 Performance Repower & are undertaken to ensure complete confidence in the Nizpro Marine 332HO Performance Repower.

*Performance Caveat: Engine must run on Minimum 89–90 USA grade / 95-98 AUS grade Octane fuel & have adhered to recommended Yamaha service intervals. 

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

STOCK YAMAHA VF225 SHO VS NIZPRO 332HO Performance Repower
• Power increase to 332 hp
• 25% Torque increase to 327Ftlbs
• Nizpro 6200 or 7100rpm rev limiter – your choice
• Improved fuel economy

DIY Kit includes

• ECU Flash Interface & USB Cable
• AC Flash Power Supply – Region Specific
• 12V DC Power Cable
• SHO V6 Flash Harness
• 2 x 332HO Nizpro Decals
• 1 x 332HO Performance Repower
• Nizpro Trucker Cap
• Nizpro USB preloaded with Instructions

Suitable for

• Yamaha SHO VF225 LA         A Series  2009 to 2021

NIZPRO – Yamaha 4.2L V6 VMAX SHO ECU Flashing Instructions