Although I have no interest in doing so (yet) all these threads about tuning the diesels got me wondering why there isn’t anyone doing a pulley swap and tune for the supercharged gas engine.
So I did a quick google for the f-type as I believe it’s the same engine(?) and the first result that popped up showed this kit taking the 340bhp base F-Type up to 453bhp and 450ft/lb:

https://www.velocityap.com/Jaguar-Land-Rover-5-0L-Performance-ECU-Tuning-p/vel-jagftypev6cptune.htm

That seems like quite the gain (I note the 380bhp S model gets the same final figure), more than I would expect and I wonder why they don’t offer it for the Disco?

 

Yes - velocity is v popular on the Jag Forum. Lots of tune and also pulley and tune experience on these engines. The V8 5.0 and the V6 SC.

They do land rovers too. Not sure they have had much demand for the new Disco as it's so new. But they do it for the same V6 SC in the LR4

Call Stuart at velocity AP. They are sponsor of the Jag forum and offer discounts.

 

I can save you the trouble and tell you they can do it.

 

Has anyone on here done a pulley and a tune?