Originally Posted by Gsedan35

The best street comfort coilover on the market, period. But a polar opposite for the track. What makes them so excellent on the street is their mild spring rates and mild damping rates. But turning them up spikes mid and high speed damping (piston speed), leaving low speed damping largely uneffected. So, no matter how much you turn them up, you still have the same low levels of damping in the low speed area when set to full soft. Not only does ride quality go the wrong direction, you don't get the control where you need it. I had them on my car and I had them run on a shock dyno. I wasn't given the dyno runs past full soft, but I was standing in front of the dyno and wached the runs come onto the screen. As far as settings go, they are best left at full soft, avoiding settings past 5.

So, in your case, you'd be much better off with the HKS III, where you would also benefit with linear rear springs.