Engines We Tune

Find your motor.

Nizpro's ECU performance repowers cover the full Yamaha 4-stroke range — F50 through F450 XTO, plus every VF SHO. Browse by family below.

Inline 4 — Offshore

L4 Offshore.

The 4-cylinder offshore Yamahas — kicker engines, bay boats, flats skiffs, and twin-rigged smaller consoles.

/ 01

L4 1.0L Offshore

F50 · F60 — Yamaha's smallest 4-strokes. Kicker engines, tenders, and small skiff power.
Repower
Performance ECU Flash
/ 02

L4 1.8L Offshore

F75 · F90 · F115 · F130 — Mid-range 4-cylinder workhorses for bay boats, flats skiffs, and smaller twin-rigged consoles.
Repower
Performance ECU Flash
/ 03

L4 2.7L Offshore

F150 (Mechanical) — The mechanical-throttle F150 — older platform, still common on workboats and older center consoles.
Repower
F150 Mech Flash
/ 04

L4 2.8L Offshore

F150 · F175 · F200 — The popular offshore 4-cylinder. F200 unlocks +31hp with up to ~16% fuel economy gains at cruise.
→ 231 hp
231 FSR Repower
SHO — High Output

The VF Series.

Yamaha's High-Output platforms. Stronger torque, faster hole-shot — Nizpro's specialty since the 332HO Performance Repower.

/ 05

L4 1.8L SHO

VF90 · VF115 — Yamaha's High-Output 4-cylinders. Pontoons and performance flats boats.
Repower
SHO ECU Flash
/ 06

L4 2.8L SHO

VF150 · VF175 — High-Output 4-cylinder SHO. Strong torque for performance pontoons and big bay boats.
Repower
SHO ECU Flash
/ 07

V6 4.2L SHO

VF200 · VF225 · VF250 SHO — Nizpro's flagship tune. Up to 332hp with stronger torque across the rev range. B-Series engines (2022+) get a choice of 6200 or 7100 rpm rev limiter, plus up to ~27% fuel economy gains at cruise.
→ 332 hp
332HO Repower
V6 / V8 — Offshore

Big Bore.

The big-displacement Yamahas — built for offshore tournaments, the Bahamas crossing, and quad-engine center consoles.

/ 08

V6 4.2L Offshore

F225 · F250 · F300 — The 4.2L V6 offshore platform, both digital and mechanical control, including F300 XA Offshore variants. Up to ~15% fuel economy gain at cruise.
→ 332 hp
332HO Repower
/ 09

V6 4.3L Offshore

F350 (2024+) — Yamaha's newer 4.3L V6. The NIZPRO 382 Enhanced upgrade for the latest F350 platform.
→ 382 hp
382 Enhanced
/ 10

V8 5.3L Offshore

F300 V8 · F350 V8 — The big-block 5.3L V8 platform. Built for tournaments, Bahamas crossings, and quad-engine center consoles. Up to ~10% fuel economy gain.
→ 425 hp
425HO Repower
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V8 5.6L XTO

F375 · F425 · F450 XTO — Yamaha's biggest outboards. Performance Repower available for the XTO platform.
Repower
XTO ECU Flash

Don't see your motor or not sure which family you have? Send us your model, year, and HID number — we'll confirm availability and recommend the right Nizpro tune for your specific engine.

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See if your motor qualifies.

Tell us your engine model and year. We'll confirm availability and walk you through what to expect on your specific platform.

Call (305) 482-1121
Nizpro Marine performance tunes require a minimum of 89-octane US pump fuel and adherence to Yamaha's recommended service intervals. Performance gains vary by engine model, year, propeller setup, hull configuration, and operating conditions. ECU tuning is a modification — implications for any factory warranty depend on Yamaha and the specific issue.