Yamaha F75 / F90 / F115 Mail-In ECU Tune — 1.6L & 1.8L 4-Cylinder Outboard

Yamaha F75, F90, F115 Professional Mail-In ECU Tuning Service

Transform your Yamaha F75, F90 or F115 outboard with N2 Speed's professional mail-in ECU tuning service. The F75 and F90 run Yamaha's 1.6L four-cylinder and the F115 runs the 1.8L — Yamaha's most popular midrange powerplants, and both respond exceptionally well to custom calibration. Our technicians optimize fuel delivery, ignition advance and throttle mapping for measurable, repeatable gains.

What's Included

• Full ECU bench read — factory calibration extraction and secure backup
• Custom performance calibration — fuel maps, ignition timing, rev limiter, and throttle response tuned for your engine and application
• Return shipping included 
• 24–48 hour turnaround — fast bench service with priority scheduling

Performance Gains

• 10–20% horsepower increase over factory calibration
• 15–20% improved fuel economy at cruising RPM
• Faster hole shot and stronger mid-range pull
• Eliminated throttle hesitation and flat spots
• Rev limit optimization for performance propping setups

Compatible Engines

• Yamaha F75 (1.6L 4-Cylinder, 2005–2017) — 6D6
• Yamaha F90 (1.6L 4-Cylinder, 2005–2017) — 6D8
• Yamaha F115 (1.8L 4-Cylinder, 2005–2010) — 68V
• Yamaha F115 (1.8L 4-Cylinder, 2011–2014) — 68V
• Yamaha F115 (1.8L 4-Cylinder, 2014–2025) — 6EK

How It Works

1. Order this service and receive shipping instructions within 1 hour
2. Ship your ECU to N2 Speed in Pompano Beach, FL
3. We bench-flash your custom calibration within 24–48 hours
4. Your tuned ECU ships back
5. Reinstall and enjoy

No additional hardware or software needed on your end.

Questions? Call (954) 406-8550 or contact us to discuss your setup.