BHP+25 hp (5%)
Standard
475 hp
Tuned
500 hp
Torque+30 Nm (7%)
Standard
440 Nm
Tuned
470 Nm
Suitability
Limited (3.5/10)Gains Profile
Limited headroomHeadroom
LowPorsche 911 GT3 3.8i 475hp ECU Remapping
Considering an ECU remap for your Porsche 911 GT3 3.8i 475hp? A Stage 1 remap can take this 2011 - 2015 ( 991 ) petrol engine from 475 BHP to 500 BHP and from 440 Nm to 470 Nm of torque (naturally aspirated). This engine scores 3.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Porsche 911 can achieve.
How this engine compares
- 25thof 49 Porsche 911 engines by power gain
- 28%of the 9,842 engines we hold gain data for see a smaller power increase
- 17%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Porsche 911 GT3 3.8i 475hp is a 3.8L naturally aspirated petrol engine producing 475 BHP and 440 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 500 BHP and 470 Nm — a gain of around 25 BHP (5%) and 30 Nm (7%).
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.. High tuned torque: check transmission torque capacity and service history.
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.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
!High tuned torque: check transmission torque capacity and service history.
Other 911 2011 - 2015 ( 991 ) Engines
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