It used to fire enough to almost kick over. Then the coil pack got so hot it leaked. I replaced both the coil pack and the ignition module with ones from NAPA. Since then it hasn't fired nearly as well. I exchanged the units 3 times with no change. Some have told me that only the AC Delco units work really well, but being that I have spark and fuel it seems that the unit is working fine. I would like to try an AC Delco unit to see if it makes any difference, but don't want to buy another just to find that I am still in the same spot. I also thought that it might have been the injectors getting clogged, so I bought a new set - but still no difference. So now I have two sets of 72 lb injectors. I went ahead and bought a Direct Scan unit and am going to see if that helps diagnose the problem. I would still really like to test an AC Delco, ign module and coilpack though.