Try setting the 4 lingk I.C at 50 to 51.0 out and 5.0 to 6.0 off the ground I've heard those settings are pretty good for your average door car at or close to 3200 bls with driver that will run in the high tens to high nines Maybe sommeone a lot more knowlegable on setting a four link car up will chime in with a better, more knowlegable(SP?) setting