Jaguar XJ Stage 1
10 engines – 207–575 hp
10
engines
+73 hp
Max gain
+12%
Avg. gain
✓
Eco Tuning
2003 - 2009
2 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 4.2 V8 SC 400hp | Petrol | 400 | 473 | +73 (18%) |
| 2.7 TDV6 207hp | Diesel | 207 | 243 | +36 (17%) |
2009 ->
8 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 3.0 V6 SC Turbo 340hp | Petrol | 340 | 393 | +53 (16%) |
| 5.0 V8 Supercharged 510hp | Petrol | 510 | 563 | +53 (10%) |
| 3.0D 275hp | Diesel | 275 | 326 | +51 (19%) |
| 3.0D 300hp | Diesel | 300 | 333 | +33 (11%) |
| 2.0 SC Turbo 240hp | Petrol | 240 | 271 | +31 (13%) |
| R575 5.0 V8 Supercharged 575hp | Petrol | 575 | 602 | +27 (5%) |
| 5.0 V8 385hp | Petrol | 385 | 408 | +23 (6%) |
| R 5.0 V8 Supercharged 550hp | Petrol | 550 | 573 | +23 (4%) |
FAQ
Is Stage 1 safe for the engine?+
Yes, Stage 1 is a mild optimization within factory safety margins. We use dealer-level equipment and verify results on a dyno.
How long does it take?+
Usually 2–4 hours, including diagnostics, remapping, and a control measurement on our dynamometer.
Does it affect fuel consumption?+
Stage 1 can reduce consumption (better torque curve) or slightly increase it under aggressive driving. On average, consumption stays the same.