At Tampa Marine Tuning, we are excited to offer Nizpro's performance tune for 6 Cylinder Yamaha outboard SHO engines. With Nizpro's performance upgrade, your 200, 225, or 250 horsepower engine can increase to 332 horsepower. Fuel Economy will vary by model and boat setup but on average customers 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.**
If you’re looking to tune your 250 SHO, please know that Yamaha fudges the numbers to be competitive with the other manufacturers. For example the 250 actually produces 283 peak HP on the dyno, so the real gain with our tune is ~60hp. That being said you will still see an increase in speed, torque and fuel economy, but its not going to give you 20mph extra in top speed.
For the 200 & 225 SHO on your bass boat, you’re a psycho and we love it. You might consider adding seatbelts to your captain’s chair.
Find your ECU ID
Your engine's ECU can be found in one of several locations in the engine case depending on year, make, and model.
Typical V6 ECU Location: Aft, middle.
You will need your ECU ID to purchase a software upgrade. Follow the link to our ECU Removal Guide video for guidance.
Have a question, or want a product recommendation? Get in touch.