Has anyone had their NA 5.0 tuned?
If so what were the results?

 

I too have been waiting on the fence about this. I hear the gains are minimal, around 20hp. But, I'm most interested in having the overrun pops and crackles of the F-type R/XFR-S programmed in.

There is a thread from an XJ owner after getting a tune on their 5.0 NA. Positive remarks relating to "woke the engine up", etc., but no dyno data.

 

I do have a tuner who is really good that I have dealt with before but they have never tuned a jag. I think I'll take to them and see what they say. I'll post any and all info I get