My car it's unsafe in highway

[diegom6]

hope it helps at least a little bit so you know you're moving in the right direction. Do you have access to any other springs to try in back? Also are you sure you're adjusting the konis properly if they're the collapse fully and turn type? How much different did it act over small bumps with them on full soft. If it doesn't bounce with those stiff e36 coilovers on full soft i'd be pretty suprised.

It bounced, mostly on front where my konis were almost fully on the soft side, I tighted it to about 3/4 of it's full lenght and doesn't do it anymore in certain conditions of corse.

I do not have acces right now to other set of springs but I can make those, there is a shopp that specializes in this and they are very good. I can make identical but stiffer in excess of 5%-10-15-20-25% etc than what i have right now.