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an increase of 2-5mph in top speed
your engine must run on minimum 89-90 USA grade / 95-98 AUS/EUR grade octane fuel and adhere to recommended service intervals
With this performance upgrade
and factory 115-horsepower Yamaha SHO engines are transformed to 152hp screamers
At Tampa Marine Tuning
4 Cyl 1.8L Yamaha SHO 90, 115 Nizpro Tune (2015-Present) sho an increase of 2-5mph inWith the Nizpro performance tune, factory 90 horsepower Yamaha SHO engines can increase to 123hp, and factory 115 horsepower Yamaha SHO engines are transformed to 152hp screamers. 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 90 USA grade 95 98 AUS
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