Jaguar XJ ECU remapping
44 files available
About remapping
The Jaguar XJ is the marque's flagship saloon and accounts for 44 files in our catalogue, with the 2.7 TDV6 as the most worked engine, accompanied by the 3.0 D and the 2.0 T petrol. It is a large car where the objective of the map is smoothness and pull rather than aggression.
Stage 1 accounts for 35 files, with 7 DPF off and 5 EGR off. The ECUs vary by generation: the Bosch EDC17CP11 on the modern diesels, the Siemens/Continental SID201, SID204 and SID20X on the V6 units, and the MED17.8.31 on the petrol versions.
Model highlights
- ›35 Stage 1 files across the model's diesel and petrol engines.
- ›The 2.7 TDV6 is the most worked engine in the catalogue.
- ›7 DPF off and 5 EGR off files as complementary services.
- ›EDC17CP11, SID201, SID204, SID20X and MED17.8.31 ECUs.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 3.0D V6 | Diesel | 300 hp | 332 hp +32 | — |
| 2.7D | Diesel | 207 hp | 244 hp +37 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
2.7D
ECUs
Generations covered
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
DPF off
Particulate filter solution: no more regenerations or blockage warnings.
EGR off
EGR valve management to reduce soot issues and improve response.
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
Speed limiter removal
Removal of the factory speed limiter.
Why remap with Repromatronic
- ✓More power and torque with engine-safe tuning
- ✓Sharper throttle response and nicer driving
- ✓Potential fuel savings in normal driving
- ✓Files built from the original and 100% reversible
- ✓Made by technicians with thousands of projects behind them
Are you a driver?
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Log in as a professionalFrequently asked questions
What approach suits a flagship saloon?
Seeking pull and smoothness rather than aggressive response. On an XJ the aim is for the car to gain flexibility without losing the refinement that defines the model.
Do you work with Siemens SID ECUs?
Yes, the SID201, SID204 and SID20X appear on the XJ's V6 diesels and we have them covered in our catalogue.
Can it be reverted?
Yes. We keep the original ECU file before any modification, which is especially relevant on a vehicle in this segment.