15F / LX - 152ch Tuning
Kawasaki (Marine) STX — Detailed power and torque gains by stage.
Gains by stage(3)
Power
152 hp
Torque
144 Nm
essence
Power
152→170ch
+18 ch
+12%
Torque
144→155Nm
+11 Nm
+8%
OriginalTuned
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Everything about 15F / LX - 152ch tuning
Tuning the 15F / LX - 152ch found in the Kawasaki (Marine) STX is one of the most popular performance upgrades. This engine offers excellent potential for power and torque gains.
On ChiptuneMAP, find verified gain data for each stage, compare tuner prices and find the ideal professional for your project.
Gains summary by stage
On the Kawasaki (Marine) STX 15F / LX - 152ch, tuning delivers up to +18 hp and +11 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 152 → 170 hp | 144 → 155 Nm | — |
| E85 Flexfuel | 152 → 152 hp | 144 → 144 Nm | — |
| E85+ | 152 → 170 hp | 144 → 155 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 15F / LX - 152ch?
Tuning the 15F / LX - 152ch (Kawasaki (Marine) STX) delivers significant power and torque gains depending on the chosen stage. Stage 1, with no hardware modifications, offers the best gain-to-reliability ratio.
Is tuning reliable on the 15F / LX - 152ch?
Yes, the 15F / LX - 152ch is known for its reliability when tuned, especially at Stage 1. It's essential to use a certified tuner with maps tailored to your engine.
How much does Kawasaki (Marine) STX tuning cost?
Prices vary by stage and tuner. Check our directory to compare rates from professionals near you.
Should I get a tuning box or an ECU remap?
ECU remapping (modifying the engine control unit map) delivers better results and integration than a plug-in tuning box. It's customized for each engine.
How do I find a tuner for my Kawasaki (Marine) STX?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.