Boat / Jet Ski
Yanmar · 4Jh Series
4JH3-DTE 2.0L I4122hp
From 2000 · 2000 → present
Tuning gain
+35HP
+86Nm
Stock HP
122hp
Tuned HP
157hp
Stock Torque
325Nm
Tuned Torque
411Nm
Power curve
Horsepower
+35 hpStock
122
Tuned
157
Torque curve
Torque
+86 NmStock
325
Tuned
411
Power & torque curves
Illustrative · interpolated from peak values- Stock HP
- Stock Nm
- Tuned HP
- Tuned Nm
Available tuning options· Chiptuning
stage 1vmax
About this tune
DynoVault's Stage 1 chiptuning for Yanmar 4Jh Series 4JH3-DTE 2.0L I4122hp delivers a measured gain of +35 hp (122 → 157) and +86 Nm of torque (325 → 411). The ECU file is custom-mapped per variant and tested against the original safety margins for boost, fueling, and EGT. Available with a lifetime tune warranty and optional fuel-economy mode.
Benefits
- ▸Custom file guarantee.
- ▸Possibly of minimize fuel consumption.