By reprogramming the ECU, not only were we able to increase power for the Jaguar 5.0 Supercharged engines, we were also able to remove the speed limiter, hesitation/flat spots, and raise the RPM all while improving fuel economy by 10-15%.

We can take the 470hp 424lbs tq Jaguar XF and XJ/XJL Supercharged and 510hp 461 lbs tq Jaguar XJ Supersport, XFR, and XKR to: 565hp & 525+lbs tq with only an ECU tune. By replacing the pulley, total gains of 590hp & 550+lbs tq can be obtained.

For owners who are not accessible to any of our dealers, you are in luck. We are offering a new package where you will be able to reprogram your vehicle through the OBD II port in the comfort of your own home. The process is simple, safe, and easy. Contact us directly for more information.


Please inquire about any Jaguar model.

Contact the sales department for any questions or concerns.

Please obey all traffic laws. ECU Tuning Group does no encourage speeding.

 

Please view the original post. Gains have been updated to 565hp 525+lbs tq with an ECU tune and 590hp 550+lbs tq with a pulley and tune.

New pricing available on our website. Price List

We posted new information about the Jaguar 5.0L Supercharged in our blog.

 

Hey Guys!

An ETG representative will be around Boston and Connecticut until Sunday. If any of you are interested in having your vehicles programmed, please contact me immediately.

Sorry for the short notice!

Kind regards,

ECU Tuning Group

 

Hey can you price me a tune from you guys ? And if you have pulleys can you add that in on pricing too?