A wise old race engineer (no, not Doug Arnao) once explained to me the function of the 'fast' jounce and rebound settings of the shocks...as different from the normal (or 'slow') settings. The normal settings react to driver input (brake, turn, accelerate). The stiffer these settings are, the faster the car responds to driver-induced transients. (Too stiff and the tire can lose contact with the road.) The fast settings react to input from the road (bumps, dips, curbs). Soooo...if you don't want the car to be tossed around by the curbs (a Big Problem at Barcelona and Syracuse), you lower the fast settings, as I have done here. (The other thing this setup does is encourage late apexes, to deal with Syracuse's many decreasing radii turns.) Ten-lap race setup.
