I'm no expert in these matters... But
X3 (X5d too, I guess) has the Overdrive-effect, that can be used as a
poor-man's wah. It works best with e-guitars (suprise, surprise) and other usually distorted sounds. I don't remember the parameters, but I think the X3preload-bank
(available for download in several places) has an electric guitar sound (A/B94?) that uses overdrive to generate the effect.
All I can say, is happy hunting. Hope you have a disk drive