Chiptuning Mercury
Up to 30% more power for your Mercury
Our Mercury catalog covers 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 boxes (up to 12% more power). Each engine’s figures are on its own page.
Mercury plug-in remap: no changes to the ECU software
More power and torque without rewriting the ECU or replacing any parts. The tuning box only adjusts the engine sensor signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the box can be removed at any time.
- Bluetoothchange modes from your phone
- 18 mapsfine-tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- up to +12%with the GAN GA+ on naturally aspirated engines
GAN GA and GAN GA+ tuning boxes 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
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
Choose your Mercury model
Each model lists its generations: one click takes you to a generation, two to an engine.
The biggest Mercury gains
The six engines with the biggest gains in our catalogue. These are not typical figures but the top of the range.
| Model · generation | Engine | Fuel | STOCK | With GAN | Gain | Tuning boxes and prices |
|---|---|---|---|---|---|---|
| Milan Milan | 3.0i | Petrol | 240 hp / 302 Nm | 269 hp / 338 Nm | +29 hp | |
| Grand Marquis Grand Marquis | 4.6i | Petrol | 224 hp / 368 Nm | 251 hp / 412 Nm | +27 hp | |
| Mountaineer Mountaineer | 4.0i | Petrol | 210 hp / 344 Nm | 235 hp / 385 Nm | +25 hp | |
| Mariner Mariner | 3.0i | Petrol | 200 hp / 261 Nm | 224 hp / 292 Nm | +24 hp | |
| Milan Milan | 2.5i | Petrol | 175 hp / 233 Nm | 196 hp / 261 Nm | +21 hp | |
| Montego Montego | 3.5i | Petrol | 263 hp / 337 Nm | 284 hp / 364 Nm | +21 hp |
Mercury remapping: questions
Will a tuning box affect my Mercury warranty?
Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
Tuning box or remap: which should I choose?
A flash remap permanently rewrites the maps in the ECU and leaves a trace in the flash counter. The GAN tuning box adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute. A flash remap can be the better choice if the engine has upgraded hardware, or if the car is out of warranty and you accept the risks.
Mercury chip tuning: what to know about the engines
Which Mercury models are in the catalog
The catalog covers 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 is the GAN GA+: up to 12% more power and up to 15% lower fuel consumption in ECO mode, which means better MPG. You can fit it yourself, in most cases in under 15 minutes.
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How to find your Mercury engine
Pick your model from the list above, then the generation by model year and chassis code, then the engine by the power output in your registration document. The engine page shows the exact gain and the price of the box.