A Nizpro Marine Performance Repower is about optimising the performance of your engine.

Use the DIY Repower Kit to easily flash your ECU!

Upgrading to a Nizpro Marine Performance Repower, your Yamaha V8 350hp OFFSHORE will make 425hp with a 6600rpm rev limiter and extra torque where you need it.

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

Testing: We have rigorously tested the Nizpro Marine V8 425HO Performance Repower on a standard Yamaha V8 350hp OFFSHORE engine utilizing the Nizpro Marine Endurance Test on our inhouse dyno cell. The engine passed with no adverse effects*.

That 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 425HO Performance Repower & are undertaken to ensure confidence in the Nizpro Marine 425HO 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. 

Additional Tune Licences are available from $1,250USD – 1 Licence key per ECU

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