I have it on a 2000 Ek it made a nice improvement in handling but it seems to be making a knocking noise when i turn hard on it. When i look under the car all the clearances seem to be fine. Any ideas on what it is and how to fix it?

 

I had a Progress 22mm on my Si, and after i first installed it i ran into the same problem. The endlinks on mine werent completely tightened, allowing the bar to hang closer to the control arm. Thus, whenever i hit a large bump or turned a certain way, the bar would smack the LCA.

I would look to see how much clearance you have between the bar and the LCA....if it looks really tight, adjust the endlinks and make sure theyre torqued all the way down.