wanting to dissable vats....here is a small freq. generator that will give the signal to the ecm(B6) that will fool the ecm into thinking everything is inplace and it will fire the injectors...you still have to hard wire the starter and ign.
link http://temp.corvetteforum.net/c3/70lt1/vats.shtml
in the schematic to get a 30Hz wave(which vats1 needed) remove the 10K and 2.2K resistors and replace with 22K. This will make 30 Hz.