Mike X-ray ; I'm running the heaviest front spring Durango makes (white 119) so its as hard as it can got .
400 units ; u use several different tuning tricks to maximize ur performance . And I along with many others believe the cars feel better and r easier to set up once u achieve balance . It does drive different (something u have to get used to)I've have 10+different people drive my truck and I always get the same resp once " it feels really balanced and easy to drive compared to mine let SO&So drive it ...." lol now if I could turn the lap times they do with my truck...
I believe in the system cause I tried it and liked it much better than a " text book set up"