Expected gains of +20 BHP and +40 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Jaguar XJ R 5.0 V8 Supercharged 550hp? A Stage 1 remap can take this 2009 -> petrol engine from 550 BHP to 570 BHP and from 680 Nm to 720 Nm of torque (supercharged). This engine scores 4.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Jaguar XJ can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Jaguar XJ R 5.0 V8 Supercharged 550hp is a 5.0L supercharged petrol engine producing 550 BHP and 680 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 570 BHP and 720 Nm — a gain of around 20 BHP (4%) and 40 Nm (6%).
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.
From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted). at this torque level, transmission and driveline servicing history becomes especially important..
Considerations: 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.
| Engine | BHP |
|---|
| Gain |
|---|
| Torque |
|---|
| Gain |
|---|
| Score |
|---|
| 2.0 SC Turbo 240hp | 240 → 270 | +30 | 340 → 440 | +100 | Good (7/10) |
| 3.0D 275hp | 275 → 325 | +50 | 600 → 675 | +75 | Good (6.5/10) |
| 3.0D 300hp | 300 → 330 | +30 | 700 → 780 | +80 | Good (6/10) |
| 3.0 V6 SC Turbo 340hp | 340 → 390 | +50 | 450 → 500 | +50 | Good (6/10) |
| 5.0 V8 385hp | 385 → 405 | +20 | 515 → 540 | +25 | Limited (3.5/10) |
| 5.0 V8 Supercharged 510hp | 510 → 560 | +50 | 625 → 700 | +75 | Good (6/10) |
| R575 5.0 V8 Supercharged 575hp | 575 → 600 | +25 | 700 → 750 | +50 | Moderate (5/10) |
Get a personalised remap quote for your Jaguar XJ. We'll connect you with a trusted professional in your area.
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 before proceeding.