Jaguar S-Type 4.2 V8
ECU Remapping Merseyside
Jaguar S-Type 4.2 V8 in Merseyside. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Jaguar S-Type 4.2 V8: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+25 bhp · +8%- Standard300 bhp
- Remapped325 bhp
Torque
+55 Nm · +13%- Standard420 Nm
- Remapped475 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
What does a remap do for the Jaguar S-Type 4.2 V8? Our figures show power up from 300 to 325 bhp (+8%) and torque up from 420 to 475 Nm (+13%), a stage 1 result you can book in Merseyside.
Treat the numbers as a guide: they are stage 1 estimates for a petrol Jaguar S-type in sound condition, and individual cars differ.
Jaguar S-Type 4.2 V8 power and torque after remapping
- Fuel: Petrol
- Standard power: 300 bhp, remapped: 325 bhp (+25 bhp, +8%)
- Standard torque: 420 Nm, remapped: 475 Nm (+55 Nm, +13%)
- Service: stage 1 ECU remap, fully dyno tested
How ECU remapping works on a petrol Jaguar S-type
With a petrol engine the remap works through the ECU's ignition, fuelling and turbo boost tables. Re-calibrating them within safe limits releases power that is already there, rather than adding anything to the engine.
Jaguar S-Type 4.2 V8 against other S-type engines
Among the 5 petrol S-type engines we have figures for, the 4.2 V8 ranks 5th for power gain, 8 bhp below the S-type petrol average of 33 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 25 bhp and 55 Nm sits below that benchmark.
Book chip tuning for your Jaguar S-type in Merseyside
This is the Merseyside site of the Remap Experts network, serving local drivers. We regularly work with drivers in Kirkby, Southport, Skelsmersdale, Knowsley and Halsall and nearby areas of the North West.
Every remap is fully dyno tested and comes with a 30 day money back guarantee and a lifetime software warranty. Call 0800 779 7864 for a quote.
If you are closer to Liverpool, Warrington and Cheshire, those neighbouring Remap Experts sites can help too.

Ready for ECU remapping on your Jaguar S-type in Merseyside?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your Jaguar S-type
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide