4 Cyl Yamaha SHO Nizpro Tune 150, 175 (2012-Present)

With the Nizpro performance tune, your 150 or 175-horsepower Yamaha outboard engine can increase to a 231-horsepower monster. You will experience a substantial increase in low-end and mid-range torque torque to get you up on plane quicker, and depending on your setup, an increase of 2-5mph in top speed.

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