I have the Caldoofy intake on mine, I would recommend. John who makes them is a great guy to deal with.
Contact him here:
http://www.jaguarforums.com/forum/private.php?do=newpm&u=122790

 

Thankyou for the reply Alec!
I'll message him via that link now, really appreciate it!

 

is it a worthwhile upgrade ? now there's a question.....

if you mean "will it give me a power increase", well then, the manufacturer of the upgrade should be able to provide you that proof. Accept nothing else than a controlled test with before-and-after dyno plots on the same car. If you think I'm sounding doubtful, well there's a good reason for that - my gut feel says it'll be worh at the most, zip in the way of power improvement. This is a qualified position, having tested maybe a hundred of this sort of thing over the years.

if you mean "its my baby and I like spending my money on upgrades", then the answer is a resounding "yes", it will be worthwhile. You'll have done something, it'll be more "yours" and it'll sound a whole lot more "rorty"

 

the only one I have found for sale is the version from Mina Gallery.

Tony, I don't have an XJR, but if you are a member of the Jaguar Enthusiast Club, reading a long thread by Mike Kennedy (X350 Forum Coordinator) on tuning his XJR reveals he was less than happy with the fit of the Mina Gallery intake and has trouble corresponding with them about it. He's done all sorts of gas flowing and other fettling to his car to get maximum power which makes interesting reading if you want to tune yours up:

http://www.jec.org.uk/forums/viewtopic.php?f=281&t=10761

 

stopped reading that as soon as it mentioned terraclean!!!!!

 

2woody, someone on jaguarforums.com had a before and after dyno and reported a 10hp increase, but the extra supercharger whine is worth it alone for me.

BrianG, interesting, no issues with the Caldoofy pipe, except slightly fiddly to slide the silicone tubing on.

 

We have a member who's fitted Nitro to his XJR ...

 

Been in contact with John, the gentleman behind the caldoofy intake, got one on order.
Looking forward to getting this sorted out next!
Thanks again for the advice Alec.
Tony.

 

think i've got some bigger chargecoolers for the later engine somewhere?

 

That could be interesting if you have!!
I'd be grateful if you could let me know some more on these, looking at upgrading the chargecooler & pump over the winter hopefully....

 

Alec Escolme, thank you for the reference but through that link I cannot get through to John, any email contact or something am really interested in the air intake.

 

Had a reply from John today by PM him on here,perhaps try that