You can request for a Tuning Calibration for your Jaguar XJ 2009 -> 5.0 V8 385hp vehicle on our file service site.
These Tuning Calibrations always made in real time suited to your needs and cars maximum ability.
All our Tuning files are made with maximum precision and care to be efficient.
In this particular case, we can increase the power of your engine from 385 HP to 405 HP, 515 Torque to 540 Torque within a Stage1 Calibration package.