Jaguar XK 4.2 V8 Supercharged
ECU Remapping
Jaguar XK 4.2 V8 Supercharged. 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 XK 4.2 V8 Supercharged: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+45 bhp · +11%- Standard420 bhp
- Remapped465 bhp
Torque
+105 Nm · +19%- Standard560 Nm
- Remapped665 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
ECU remapping for the Jaguar XK 4.2 V8 Supercharged takes it from 420 to 465 bhp and from 560 to 665 Nm in our stage 1 figures: +45 bhp (11%) and +105 Nm (19%).
The figures above are estimates for a standard, well-maintained Jaguar XK petrol; they are not a guarantee of any particular result.
Jaguar XK 4.2 V8 Supercharged power and torque after remapping
- Fuel: Petrol
- Standard power: 420 bhp, remapped: 465 bhp (+45 bhp, +11%)
- Standard torque: 560 Nm, remapped: 665 Nm (+105 Nm, +19%)
- Service: stage 1 ECU remap, fully dyno tested
Petrol Jaguar XK: what changes with a remap
Factory petrol calibrations leave margin for poor fuel and hot climates. A remap tunes the ignition, fuelling and boost maps to make better use of that margin, which shows up as livelier throttle response and stronger acceleration.
How the Jaguar XK 4.2 V8 Supercharged compares
Among the 2 petrol XK engines we have figures for, the 4.2 V8 Supercharged ranks 1st for power gain, 10 bhp above the XK petrol average of 35 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 45 bhp and 105 Nm sits at or above that benchmark.
Book ECU tuning for your Jaguar XK
Remap Experts is a UK network of local remapping sites. Use Find a Local Tuner to reach your nearest site and get an exact quote.
Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.
Want these figures on your Jaguar XK 4.2 V8 Supercharged?
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your Jaguar XK
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 XK 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