2004r with a 3600 stall Precision Industries multi disc L/U, chip controls the lockup. On the street the transmission and converter do perfect, with very firm shifts and solid lockup at 55 MPH. At the track, 1-2 & 2-3 shifts are at 5750 RPM, and WOT lockup is set for 3rd gear @ 5700 RPM as well...