Forgive my confusion Mr Old GitYou've bought another servo? I didn't take your original comment 'Hmm what's this Exup thingy' as being it's faulty or you've got a fault code? Have you located the exup valve itself (in the exhaust) and checked it's operation from down below? I use a mirror on the ground so I can see the pulley from above as I first turn the ignition on to check it's movement and whether adjustment is required.
short video of the 2 servos http://www.youtube.com/watch?v=OgdNarlNz_Y
I see that a different way , isnt the old git trying to show the difference in movement , the new one travels over a full rotation where as the old one is just under a full rotation......