When I got the koni's adjusted right with street tires they made a night and day difference. I was able to do a 4 wheel drift when I pushed too hard in a corner! (No understeer) Now I'm searching for the best setting with the R compound tires. They really stiffened up the ride IMO. I tried the softest setting but that just made them bouncy. On the track, setting them stiff on the front and soft on the rear worked well for me, opposite from what research suggested. With R compound it seems the car likes it soft on the front and stiff in the rear. My last event was a timed event so I just set the shocks and left them alone. This weekend is track time so I'll be trying different settings. The short answer is the Koni's make a real positive improvement in handling but are harsher on bad roads.

YouTube - Oct 25, 2009

This video is with the camera mounted on the drivers side of the rear window and if you watch the horizon you can see how much roll the car has with the stock springs. I'd never noticed it driving the car. I'm mounting the camera in the same position this weekend, even though the track has a different configuration, to see if the Eibach's make a positive difference. Nothing like testing and verifying parts and changes.

Les