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V6 4.2L Yamaha 300 - Nizpro Flash

Old 10-11-2019, 07:38 AM
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Join Date: Jun 2017
Location: Naples, FL
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Default V6 4.2L Yamaha 300 - Nizpro Flash

We have a 2005 World Cat 33TE and are exploring the option of tuning our twin Yamaha 300s with the Nizpro Flash. According to the dealer, the flash adds about 36hp per engine, some additional torque, and a variety of other benefits.

Has anyone here flashed their 4.2L Yamaha F300?

What is your opinion on the results? What changes did you see cruise, top end, and economy wise?

Did you have to reprop? What did your pitch change to?

Thanks everyone!
Old 10-11-2019, 07:49 AM
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Just get the super charger kit and make then 450s. (Supercharged 450s - Nizpro Marine) No idea with the flash. Figured if your going to void the warranty do it in style.
Old 10-11-2019, 08:40 AM
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Join Date: Jul 2018
Location: Wilbraham, MA
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Improved fuel economy, better power band, and bragging rights. +1 for straight up supercharging.

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