It all depends on track conditions. When my 85 was still hot air, the only mods were fuel pump, no air filter, 160 stat, and 15psi boost, the car ran 13.84 launching on 5psi with an open rear and 215/65 BFG Radial TA's on the back. The previous best was 14.3 on a crappy track. At 20 psi as long as everything else is right, it should trap 105+.