Your Vehicle
Jaguar XJ 4.2 V8 SC 400hp
Technical Specifications
Power hp
Torque Nm
Power Graph
Jaguar XJ 4.2 V8 SC 400hp: da 400 a 470HP
Remapping Jaguar XJ
MasterTuning is a leader in developing remapping for Jaguar. La Jaguar XJ 4.2 V8 SC 400hp può passare da 400 HP a 470 HP con un incremento di 70 HP.
The development of each remap is customized by MasterTuning.
- 100% tested and customized files guarantee
- Tested and developed on a 4x4 dyno
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details Jaguar XJ 4.2 V8 SC 400hp
The Jaguar XJ 4.2 V8 SC 400hp is equipped with a petrol engine that produces 400 HP and 540 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this Jaguar can achieve 470 HP (+18%) and 630 Nm (+17%).
Our Stage 1 tuning for the XJ 2003 - 2009 delivers an impressive gain of +70 HP and +90 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code AJ34 identifies this specific powerplant configuration. The Denso MB279700 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
With 400 HP from factory, this Jaguar XJ is already a performance vehicle. Our remapping extracts even more potential, delivering exhilarating acceleration and enhanced driving dynamics for enthusiasts who demand the best.
Frequently Asked Questions - Jaguar XJ
How much power can I gain from remapping my Jaguar XJ?
With MasterTuning Stage 1, your Jaguar XJ 4.2 V8 SC 400hp can gain +70 HP (from 400 to 470 HP) and +90 Nm of torque. This represents a 18% increase in power.
Is ECU remapping safe for the Jaguar XJ engine?
Yes, MasterTuning's remapping for the Jaguar XJ 4.2 V8 SC 400hp is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the AJ34 engine.
Is the Jaguar ECU remapping reversible?
Absolutely. The original factory calibration of your Jaguar XJ is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my Jaguar warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
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