BHP+30 hp (10%)
Standard
300 hp
Tuned
330 hp
Torque+80 Nm (11%)
Standard
700 Nm
Tuned
780 Nm
Suitability
Good (6/10)Gains Profile
BalancedHeadroom
MediumJaguar XJ 3.0D 300hp ECU Remapping
Considering an ECU remap for your Jaguar XJ 3.0D 300hp? A Stage 1 remap can take this 2009 -> diesel engine from 300 BHP to 330 BHP and from 700 Nm to 780 Nm of torque (turbocharged). This engine scores 6/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Jaguar XJ can achieve.
How this engine compares
- 6thof 10 Jaguar XJ engines by power gain
- 39%of the 9,842 engines we hold gain data for see a smaller power increase
- 64%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Jaguar XJ 3.0D 300hp is a 3.0L turbocharged diesel engine producing 300 BHP and 700 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 330 BHP and 780 Nm — a gain of around 30 BHP (10%) and 80 Nm (11%).
This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as moderate, 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.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
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.
Considerations
!High tuned torque: check transmission torque capacity and service history.
!