Yamaha 4 Cyl 2.8L SHO 231 FSR (VF150)
About this tune.
Go further, faster — every day. The Nizpro Marine 231 FSR Performance Repower for the Yamaha VF150 SHO is a dedicated calibration developed specifically for this platform. Stock VF150 SHO measures 166.4 hp on the dyno; tuned, it makes 231.1 hp at the prop — a real, dyno-verified gain of nearly +65 horsepower. You'll feel it as sharper throttle response, stronger pull off the bottom, and more usable power right through the cruise band. Whether you're running the Bay or crossing to Bimini, this calibration delivers the balance you want: more power, better cruise economy, factory reliability preserved.
The motor.
What we tune. Yamaha builds the engine. Nizpro recalibrates the brain. We install the calibration at your slip.
Dyno data.
Real Nizpro Marine DynoLog test data for the 4 Cyl 2.8L SHO 231 FSR (VF150) platform. Stock factory output below, Nizpro Tuned output above. Power and torque across the full rev range — no marketing curves, no projections.
What's included.
231.1 hp peak measured
Stock 166.4 hp → tuned 231.1 hp. Real Nizpro dyno data, not advertised numbers.
+23 ft-lb torque
Stock 202.3 ft-lb → tuned 225.4 ft-lb. Stronger pull where you feel it.
Up to ~15% MPG
Cruise fuel economy gains on the SHO platform.
Reliability preserved
Tune stays inside the engine's design envelope. 89 MON minimum fuel.
Specifications.
| Engine Family | 4 Cyl 2.8L SHO 231 FSR (VF150) |
|---|---|
| Fits | Yamaha VF150 SHO — 2.8L 4-cylinder Super High Output, model years 2012 to present. Nizpro's 231 FSR Performance Repower is the dedicated calibration for this platform. |
| Tune Type | Nizpro Marine ECU Performance Repower |
| Output Target | → 231 hp |
| Install | Mobile — at your boat. Most jobs completed same day. |
| Service Area | Miami-Dade · Broward · Palm Beach |
| Reversible | Yes — flash can be reverted to OEM at any time. |
| Required Fuel | 89-octane US pump fuel minimum. |
Honest answers, straight up.
Will a Nizpro tune void my Yamaha warranty?
ECU tuning is a modification, so it can affect Yamaha's warranty position depending on the engine and the specific issue. Nizpro's tunes stay inside the engine's design envelope and are reversible to the OEM calibration at any time, but we always recommend talking to your local Yamaha dealer about your individual situation. We'll give you straight answers — we don't make warranty promises we can't keep.
What fuel do I need to run after a tune?
A minimum of 89-octane US pump fuel is required to run any Nizpro performance tune safely. Premium (91+) is fine and won't hurt anything. Regular 87-octane is not approved — running lower-octane fuel can cause knock and undo the gains the tune is designed to deliver.
How long does the tune installation take?
Most ECU reflashes are completed the same day. The actual flash takes under an hour — most of the appointment is diagnostics, baseline data logging, and a road test afterward. Plan on a few hours start to finish. Larger installs or troubleshooting can take longer.
Is the tune reversible?
Yes. The Nizpro flash can be reverted to the original Yamaha OEM calibration at any time. If you sell the boat, change your mind, or need to take the engine to a Yamaha dealer for unrelated service, we can put it back to factory.
How much fuel economy will I actually gain?
Real-world cruise economy gains typically run 5–20% depending on the engine, the prop setup, the hull, and how you operate. Some Yamaha platforms — like the VF SHO V6 — see published Nizpro test data of up to 27% at cruise. We won't promise a specific number on your boat until we know your setup, but the range is consistent and well-documented across hundreds of installs.
Do you tune engines other than Yamaha?
We're Yamaha specialists exclusively. Nizpro is a Yamaha-only performance shop, and that focus is part of why their calibrations are so well-developed. If you've got a Mercury, Suzuki, or Honda outboard, we're not the right shop — we'll tell you that honestly.
What does the tune cost?
Tune pricing varies by engine family — a 4-cylinder F-series flash and a V8 5.6L Performance Repower are different products at different price points. Call (305) 482-1121 or send us your engine model and year and we'll give you a straight quote.
Ready for your L4 SHO 231 FSR tune?
Tell us your engine model, year, and where the boat is. We'll confirm availability and schedule your mobile install.
Call (305) 482-1121