For the few that are interested in some serious extra power, please check the link below for more info on the twin-screw kit:

https://www.jaguarforums.com/forum/showpo...27&postcount=1

This dyi kit is now available for the steel bodied XKR and for the 4.0 (AJV8) XJR models.

Andre.

 

How about the kit for the STR?

 

Twin screws like a lysholm compressor were looked at and tested (along with turbo charging) by Jaguar engineering themselves with interesting results

 

Any mods for the 2011 XKR? Thanks.

 

Would love to do, but I can't incur the investment here, as a lot of engineering needs to go here, but would not be surprised to get way over 700 hp there. But even with the stock tvs unit you should be able to get about 600 hp, and with releasing the torque limiter gain also lots there.

 

Hi avos,
While referring to your link i found that mileage was missing. Otherwise, the presentation of the specifications is worth to every one.