have a fren who's using Eibach pro-kit on his 1.7 civic,i find that his ride is damn jumpy oh....the spring feels very hard,so the ride is like very bouncy lo....i donno la,here all say eibach soft,but from my own experience,its really very bouncy,maybe if couple up with suitable good abs then the ride quality will improve gua...
anyway he bought his springs brand new la,so its not becoz the spring was damaged or wat...
well juz my 2 cents ;)