I have recently changed my car from a nice mappable Subaru to a Jaguar XKR (yr 2000 'W' plate).
I believe the ECU to be very similar to the Denso ECUs used by the 2001+ WRX and some Volvos.
Does anyone have any experience? I have successfully talked to the ECU to read fault codes and standard data logging parameters, but not done much else yet - I am waiting for a spare ECU for my bench to arrive in the post.