Expected gains of +21 BHP and +18 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Mercury Grand Marquis 4.6 V8 239hp? A Stage 1 remap can take this 2003 - 2012 petrol engine from 239 BHP to 260 BHP and from 382 Nm to 400 Nm of torque (naturally aspirated). This engine scores 4/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercury Grand Marquis can achieve.
The Mercury Grand Marquis 4.6 V8 239hp is a 4.6L naturally aspirated petrol engine producing 239 BHP and 382 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 260 BHP and 400 Nm — a gain of around 21 BHP (9%) and 18 Nm (5%).
This engine has limited remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
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All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.