Bump steer is an issue of geometry, caused by lowering your ride height. You can't really "fix" it unless you restore the factory ride height. The front suspension design on an EF makes bump steer exponential, so the lower you are the more of it you'll get. You just put up with it to get to the handling benefit of additional camber.

Add more caster with adjustable radius rods and you'll enhance turn-in response at the expense of rut tracking, everything has a trade off. But that's getting off topic.