This thread has digressed a bit into tire pressure effect on ride harshness. Sure higher tire pressure will add sharper steering response, turn in etc, but at the expense of ride harshness. Going to 17" or 18" wheels with 40 or 35 profile tires makes the situation even more marked. Better handling, but it can detract ride quality.
Looking back a ton of replies it seemed that the 'bouncy' issue was misunderstood, perhaps mistaken for an old mushy Cadillac ride. What was meant by the 'bouncy' expression was that the D2's were so stiff at the front, there was no compliance at higher speeds, giving the feeling that the car was bouncing on the tire sidewalls only, with no shock or spring compression. D2's are set for more for track use, rather than street use, they are very firm. In my view too firm for most peoples liking.
Out of my own interest I've weighed the D2'S, complete shock and spring weighed 9.5lbs. I also weighed my Eibach Pros with Tokico shocks, they came out at 15.5lbs !! 60.4lbs for all four as against 38lbs for D2's. That translates into a considerable unsprung weight saving, and thus better handling response when coupled with lightweight wheels etc. Go a little further and install the RK suspension bushing kit, and all I can say is wow !!!! Is this the same old MKIII......
Once I get the softer D2 springs I ordered I'll post my findings.
Ciao for now
John