Absolutely LOVE the E-clik and my shocks were revalved by SDI prior to the Geiser coils being installed. But I'm getting ready to remove the Geiser coils & run SDI's new leveling kit. They do offer a different tune & valving for aftermarket coils, but I just don't like how much it "pogos" on these coils. It worked so much better when it was on the stock coils. As far as the coils being stiff on the road? Not at all...the ride is very comfortable. Except of course when you go over a speed bump or something where the suspension unloads...then it's really FAST to top out!