Verify your engine
Send the engine model, serial information, current setup, fuel, and your performance target.
Mercury outboard performance tuning
More power.
Same engine.
Precision-calibrated Mercury outboard tuning engineered for harder acceleration, sharper response, and serious horsepower gains.
600HP available
on 450R Stage 3*
on 450R Stage 3*
+125HP potential
on select models
on select models
2-DAYreturn shipping
with package
with package
ENGINEERED TO RUN HARDER
01 / PERFORMANCE
Your outboard is
holding back.
Factory calibrations leave performance on the table. FAS Marine unlocks it with model-specific Stage 1 and Stage 2 tuning for Mercury outboards from 40 HP through the 450R.
01More horsepower
Substantial power gains without replacing your engine.
02Sharper response
Improved throttle behavior and stronger acceleration.
03Built-in support
Real setup guidance available beyond the initial flash.
02 / TUNE FINDER
Choose your
power level.
Select your engine family or search the model. Every figure below comes directly from the FAS Marine Mercury tuning guide.
| Engine | Factory | Stage 1 | Stage 2 | Restrictor | Price |
|---|---|---|---|---|---|
| MERCURYF40 | 40 HP | 73 HP | 80 HP | Yes | $1,699.99View tune |
| MERCURYF50 | 50 HP | 73 HP | 80 HP | Yes | $1,699.99View tune |
| MERCURYF60 | 60 HP | 73 HP | 80 HP | No | $1,699.99View tune |
| MERCURYF75 | 75 HP | 124 HP | 152 HP · CAM | Yes | $1,699.99View tune |
| MERCURYF80 | 80 HP | 124 HP | 152 HP · CAM | Yes | $1,699.99View tune |
| MERCURYF90 | 90 HP | 124 HP | 152 HP · CAM | Yes | $1,699.99View tune |
| MERCURYF100 | 100 HP | 124 HP | 142 HP · CAM | Yes | $1,699.99View tune |
| MERCURYF115 | 115 HP | 152 HP | 160 HP | No | $1,699.99View tune |
| MERCURYF115 Pro XS | 115 HP | 152 HP | 160 HP | No | $1,699.99View tune |
| MERCURYL4 135 | 135 HP | 200 HP | 240 HP | No | $1,699.99View tune |
| MERCURYL4 150 | 150 HP | 200 HP | 240 HP | No | $1,699.99View tune |
| MERCURYL4 200 | 200 HP | 220 HP | 240 HP | No | $1,699.99View tune |
| MERCURYL6 200 | 200 HP | 250 HP | 300 HP | No | $2,299.99View tune |
| MERCURYL6 225 | 225 HP | 300 HP | 330 HP | No | $2,299.99View tune |
| MERCURYL6 300 | 300 HP | 350 HP | 375 HP | No | $2,299.99View tune |
| MERCURYL6 350 | 350 HP | 450 HP | 475 HP | No | $2,299.99View tune |
| MERCURYL6 400 | 400 HP | 450 HP | 475 HP | No | $2,299.99View tune |
| MERCURYF150 (3.0) | 150 HP | 190 HP | 204 HP | No | $2,299.99View tune |
| MERCURY175 V6 | 175 HP | 225 HP | 240 HP | No | $2,299.99View tune |
| MERCURY200 V6 | 200 HP | 225 HP | 240 HP | No | $2,299.99View tune |
| MERCURY225 V6 | 225 HP | 240 HP | 240 HP | No | $2,299.99View tune |
| MERCURY200 V8 | 200 HP | 290 HP | 340 HP · TB | No | $2,499.99View tune |
| MERCURY225 V8 | 225 HP | 290 HP | 340 HP · TB | No | $2,499.99View tune |
| MERCURY250 V8 | 250 HP | 300 HP | 340 HP | No | $2,499.99View tune |
| MERCURY300 V8 | 300 HP | 340 HP | 340 HP | No | $2,499.99View tune |
| MERCURY300R | 310 HP | 360 HP | 360 HP | No | $2,499.99View tune |
| MERCURY450R | 450 HP | 500 HP | 550 HP | No | $2,499.99View tune |
CAM requires camshaft upgrade. TB requires 80 mm throttle body. Fuel and hardware requirements vary by calibration; confirm your exact setup with FAS Marine before purchase.
03 / COMPLETE THE SETUP
Don’t stop
at the flash.
$499.99Addition to
any tune purchased
any tune purchased
- 01Custom performance tune
- 02Lifetime setup support that transfers with the engine
- 03Prepaid 2-day return shipping
A tune is the starting point. Propeller selection, verified RPM range, jack plate height, and balanced loading determine whether the result is solid—or exceptional.
Build my setup04 / THE PROCESS
Simple process.
Serious results.
Ship the ECU
FAS Marine confirms the correct tune and provides shipping instructions for your module.
Flash + return
Your calibration is completed and returned. The package includes prepaid 2-day return shipping.
Dial in the boat
Use ongoing support to refine prop, RPM range, engine height, and load for the complete result.
Ready when you are
Make your Mercury
run like it should.
Start your tune *450R 600 HP Stage 3 requires pulley swap, approximately 15 PSI, low-pitch propeller, and a 6,700–6,900 RPM target. Performance figures depend on engine condition, fuel, hardware, vessel setup, and operating conditions. Confirm all requirements before use.