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King of the Jungle
At Tampa Marine Tuning, we are excited to offer Nizpro's performance tune for the new 8 Cylinder Yamaha XTO Offshore outboard engines. With Nizpro's performance upgrade, your 425 or 450 horsepower engine can increase to 482 horsepower. Fuel Economy will vary by model and boat setup but on average we see a 15% increase in MPG.
For an additional charge Nizpro also offers an intake system to improve these gains even further. We are currently evaluating this product's quality and performance before officially adding it to the site. Call for more info.
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. Failureto do so may result in decreased performance and could potentially damage your engine.
** Multi-engine orders: Free overnight return shipping automatically applied at checkout **
Fuel Savings & Range Calculator
Input your current operating parameters to see how a tune will benefit your costs and range. Disclaimer: Estimates are calculated using a 15% increase in MPG at cruising speed. Customers with multiple engines can experience far greater results.
Please select a motor type.
Please enter cost per gallon.
Please enter miles per gallon while cruising.
Please enter miles per hour while cruising.
Please enter the number of motors.
Please enter your fuel capacity.
Please enter hours driven.
Current Fuel Economy (MPG)
Current Cost per Operating Hour
Current Range (miles)
New Fuel Economy (MPG)
New Cost per Operating Hour
New Range (miles)
XTO Install Notes
The ECU location of the 5.6L XTO engine is particularly difficult to get to and requires several parts to be removed to access. For this reason, we are not asking them to be removed and shipped to us unless customers are experienced in working on this motor or are working with a licensed shop to do so.
When you purchase this upgrade, we will ship you cables to apply the tune to your own ECU. Don't worry, our staff will guide you through the process and apply the tune via remote access to your laptop.
Please call us for assistance.
Contact us
Have a question, or want a product recommendation? Get in touch.