Jaguar XJR Supercharged
Chip Tuning Scotland
Jaguar XJR Supercharged in Scotland. 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 XJR Supercharged: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+30 bhp · +8%- Standard400 bhp
- Remapped430 bhp
Torque
+65 Nm · +12%- Standard550 Nm
- Remapped615 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
The Jaguar XJR Supercharged produces 400 bhp and 550 Nm of torque as standard. After a stage 1 ECU remap in Scotland, our figures show 430 bhp and 615 Nm: a gain of 30 bhp (8%) and 65 Nm (12%).
Treat the numbers as a guide: they are stage 1 estimates for a petrol Jaguar XJ in sound condition, and individual cars differ.
Jaguar XJR Supercharged remap figures
- Fuel: Petrol
- Standard power: 400 bhp, remapped: 430 bhp (+30 bhp, +8%)
- Standard torque: 550 Nm, remapped: 615 Nm (+65 Nm, +12%)
- Service: stage 1 ECU remap, fully dyno tested
Petrol Jaguar XJ: what changes with a remap
On a petrol car the ECU controls fuelling, spark timing and any turbo boost. A remap re-calibrates those maps within safe limits, so the car responds more eagerly and pulls harder through the rev range.
Jaguar XJ ECU tuning in Scotland
Drivers in Scotland book through the Scotland Remap Experts site, one of our local sites across the UK. We regularly work with drivers in Penicuilk, Kirkcaldy, Musselburgh, Livingston and Gorebridge and nearby areas of Scotland.
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 Edinburgh, Glasgow and Fife, those neighbouring Remap Experts sites can help too.

Want these figures on your Jaguar XJR Supercharged?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your Jaguar XJ
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.
Same model
Other XJ engines
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