V6 4.2L Yamaha Offshore 225, 250, 300 Nizpro Tune (2008-Present)

At Tampa Marine Tuning, we are excited to offer Nizpro’s performance tune for 6 Cylinder Offshore Yamaha outboard engines. With the Nizpro performance tune, your 225, 250, or 300 horsepower engine can increase to 332 horsepower. Fuel Economy will vary by model and boat setup but on average we see a 15% increase in MPG.

NOTE: To achieve optimal performance, your engine must run on minimum 89-90 USA grade / 95-98 AUS grade octane fuel and adhere to recommended service intervals. Failure to do so may result in decreased performance and could potentially damage your engine.

**Multi-engine discount automatically applied at checkout.**