BHP+15 hp (5%)
Standard
300 hp
Tuned
315 hp
Torque+20 Nm (5%)
Standard
420 Nm
Tuned
440 Nm
Suitability
Limited (3/10)Gains Profile
Limited headroomHeadroom
LowJaguar S Type 4.2 V8 300hp ECU Remapping
Considering an ECU remap for your Jaguar S Type 4.2 V8 300hp? A Stage 1 remap can take this All petrol engine from 300 BHP to 315 BHP and from 420 Nm to 440 Nm of torque (naturally aspirated). This engine scores 3/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Jaguar S Type can achieve.
How this engine compares
- 4thof 6 Jaguar S Type engines by power gain
- 9%of the 9,842 engines we hold gain data for see a smaller power increase
- 8%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Jaguar S Type 4.2 V8 300hp is a 4.2L naturally aspirated petrol engine producing 300 BHP and 420 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 315 BHP and 440 Nm — a gain of around 15 BHP (5%) and 20 Nm (5%).
This engine has low 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.
From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted)..
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.