Performance Chip Tuning Mercury
Up to 30% more power for your Mercury
The Mercury catalog lists 6 engines (models: 5, generations: 5). All Mercury engines in the catalog are naturally aspirated, so they take the GAN GA and GAN GA+ tuning modules (up to 12% more power). Each engine’s figures are on its own page.
Mercury performance chip: more power, no ECU flash
More power and torque with no ECU flash and no new parts. The module only adjusts the engine sensor signals. Your factory warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothswitch modes from your phone
- 18 mapsto fine-tune your engine

- 15 minutesplug-and-play install
- IP67water and dust protection
- up to +12%with the GAN GA+ on naturally aspirated engines
GAN GA and GAN GA+ tuning modules for 6 naturally aspirated engines from Mercury; see the catalog for each engine’s figure.
- up to +30%more power
GAN GT: up to 30%, GAN GTL: up to 25%, GAN GA+: up to 12%.
- GAN APPpower control via smartphone
Switch between SPORT, DYNAMIC, ECO and STOCK in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping costs.
Choose your Mercury model
Each model lists its generations: one click gets you to a generation, two to an engine.
The biggest Mercury gains
The six engines with the biggest gains in our catalog. These are the top of the range, not typical figures.
| Model · generation | Engine | Fuel | STOCK | With GAN | Gain | Tuners and prices |
|---|---|---|---|---|---|---|
| Milan Milan | 3.0i | Gasoline | 240 hp / 302 Nm | 269 hp / 338 Nm | +29 hp | |
| Grand Marquis Grand Marquis | 4.6i | Gasoline | 224 hp / 368 Nm | 251 hp / 412 Nm | +27 hp | |
| Mountaineer Mountaineer | 4.0i | Gasoline | 210 hp / 344 Nm | 235 hp / 385 Nm | +25 hp | |
| Mariner Mariner | 3.0i | Gasoline | 200 hp / 261 Nm | 224 hp / 292 Nm | +24 hp | |
| Milan Milan | 2.5i | Gasoline | 175 hp / 233 Nm | 196 hp / 261 Nm | +21 hp | |
| Montego Montego | 3.5i | Gasoline | 263 hp / 337 Nm | 284 hp / 364 Nm | +21 hp |
Mercury tuning FAQ
Does the GAN module affect my Mercury factory warranty?
Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
Plug-in performance chip or flash tuner: which should I choose?
A flash tuner rewrites the maps in your ECU, and the flash counter records it. The GAN module adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute.
Mercury engines: what to know before you tune
Which Mercury models are in the catalog
The catalog lists 5 models from Mercury. The most engines are listed for the Milan (2), Grand Marquis (1) and Mariner (1). The biggest gain among the models is on the Milan: up to +29 hp.
Naturally aspirated Mercury engines
For 6 naturally aspirated engines from Mercury, there’s the GAN GA+: up to 12% more power and up to 15% better fuel economy in ECO mode. It’s plug-and-play: you can install it yourself, in most cases in under 15 minutes.
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How to find your Mercury engine
Pick your model in the list above, then the generation by model year, and the engine by displacement and horsepower (see your owner’s manual or vehicle documents). The engine page shows the exact gain and the tuner price.