Godspeed, what do you mean by a "bump steer eliminator"? Is that some magic doodad that bolts on?
In my experience there is no bump steer eliminator, rather, just good steering geometry. Meaning, steering geometry that works properly with the geometry of the front suspension. It's often a matter of positioning the steering pivot points in the right position relative to the pivot points of the front suspension and getting the rack located at the right height. Do this analysis and you'll be on the right track.