Mercury Grand Marquis
Mercury Grand Marquis tuning
ECU remap and chiptuning files for the Mercury Grand Marquis. Pick your engine and generation below to see original vs tuned power and torque, available stages and options.
Grand Marquis 2003 - 2012
| Engine | Fuel | Original | Tuned | |
|---|---|---|---|---|
| 4.6 V8 239hp, Stage 1 | Petrol | 239 hp | 260 hp | View → |