NIZPRO Yamaha 1.8L SVHO Jet Ski / Jet Boat ECU Tune - Mail-In

Yamaha 1.8L SVHO Calibration / Jet Ski or Jet Boat

NIZPRO ECU calibration tune engineered for Yamaha 1.8L SVHO engines installed in personal watercraft (Jet Ski/Wave Runner) or jet boats. This calibration optimizes fuel injection timing, boost pressure mapping, and ignition curves to unlock performance gains while maintaining OEM reliability standards. Compatible with FX SVHO, GP SVHO, and all Yamaha jet boat models equipped with the 1.8L SVHO, including 20-foot single-engine and 25-foot twin-engine configurations. Tune delivery is via direct ECU flash. Custom configurations available for specific hull type, intake setup, or performance target.

The rev limiter with the tune is set at 8600rpm, and there is no speed limiter. This will get you 10-15% better fuel economy. Your MPH depends on your application, on average they are seeing 8-10 MPH

Optimized for 93 octane or better fuel. This allows your calibration to easily get to the max HP and slightly beyond.  

Yamaha Wave Runners (Jet Ski)

• FX SVHO: The baseline luxury performance model.
• FX Cruiser SVHO: The luxury touring variant featuring tiered cruiser seating and premium trim.
• FX Limited SVHO: The ultimate luxury package, complete with a factory accessory kit for tow sports or navigation.
• GP SVHO / GP1800R SVHO: Yamaha's race-ready, high-acceleration performance craft built with a lighter hull for agile handling.

Yamaha Jet Boats

• 20-Foot Series (Single SVHO Engine):
  • 205XD: Premium single-engine wake series boat.
  • 205SD: Luxury single-engine sport boat layout.
  • R205: Single-engine watersports model featuring a folding wakeboard tower.
    
    
• 25-Foot Series (Twin SVHO Engines):
  • 255XD: The flagship 25-foot wake/surf boat featuring integrated ballasts and automated wake boosters.
  • 255SD: Luxury 25-foot sport boat with dual-throttle controls and premium seating.
  • 255 FSH Sport H: A center-console jet boat tailored for offshore fishing and utility. 
• 27-Foot & 29-Foot Series (Twin SVHO Engines):
  • 275SD: A yacht-certified, premium luxury day cruiser.
  • 275SE: Luxury variant focusing on high-end cruising amenities.
  • 295XD: The ultimate luxury wake series day cruiser.
  • 295SD: The flagship 29-foot premium sport boat cruiser.