A Jaguar XKR 5.0 V8 S Supercharged 550hp makes about 570 hp and 720 Nm with Stage 1 software, compared with 550 hp and 680 Nm from the factory. That is 20 hp and 40 Nm extra.

This is a petrol engine with a displacement of 4,999 cc and engine code 508PS. The engine is controlled by the Bosch MED17.8.31. The software file can be written with tools such as Alientech KESSv2.

Frequently asked questions

How much power and torque does a Jaguar XKR 5.0 V8 S Supercharged 550hp gain with Stage 1?

About 20 hp and 40 Nm: from 550 hp / 680 Nm to roughly 570 hp / 720 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a Jaguar XKR 5.0 V8 S Supercharged 550hp use?

Bosch MED17.8.31.

Which tools can read a Jaguar XKR 5.0 V8 S Supercharged 550hp?

Alientech KESSv2.

Figures are indicative and vehicle specific. Check the regulations that apply in your country before modifying engine software.