I have the Megan's on my car, now 3 days. They arrived with racing car level stiffness, 8/32 front and back were the factory settings, though I didn't know until I "found" the levels by adjusting both ways to the extremes. There is a satisfying click at every setting level.
8/32 was far too harsh for me.
I don't like the 2010 suspension, and was ready to turn in the car, but was not satisfied with tranny/accelerator set up of the 2012. (just taste).
Wanted to keep my 2010, and so far I have tried settings up and down of the front coilovers to get RID of the wallow of the std suspension, as well as the really unstable feeling I would have taking turns in the mountains of W Virginia I-77 at 80 mph. The unsettled feel on rough roads was maddening to me, a combo of the wallow, and the loss of stability.
More coming. So far I like that I get rid of the wallow at 20 in the front, and 22 in the back, but I don't like the remnant jitteriness. Going above 22 in the front reintroduces the wallow. I have adjusted the rears from 8 to 22, and not changed them since. but it will take less than 30 minutes to adjust the rears once there is some practice. It takes about 15 minutes for me to adjust the fronts, now, only because I am just learning the tricks of getting the allen wrench into the socket.
So far I have traded problems, but not found the answer, but this is not my final report. Adjustments have been easier than expected, though I do have to use the jack for the rear adjustments, just to let the tire "sag" enough to get my big mitt up behind the tire, but it's just a finger knob in the rear. Takes an Allen Wrench up front, and some practice to get the wrench in the adjustment socket.
Hoping to find that "sweet spot". Photos coming if I find my happy place.
I did not use the coilovers to lower the car, but it seems the car is about 1/2 inch lower than before, by measure to the bumpers. Installers tried to keep it the same. I don't mind the half inch, but lowering had nothing to do with buying the suspension. I want a ride I can live with. I lived with the car 40,000 miles, though, and couldn't face another 5K with suspension because my family refuses to take this car on trips. My 2006 VW Passat and 2007
Infiniti G35 with SPORT suspension both ride more comfortably than the Genesis with the shock suspension. I bought the big car to ride alone, though I didn't know it at the time.