Originally Posted by Kai
That car should be running a P30 (You might find a P61 in there, but P30 is best.) It sounds like yours has some aftermarket chip in it that is making it run crazy rich, which would cause the popping and flames.
Replace or rechip to a standard P30.
if it has the GSR head than it wouldnt run the p30 ecu because it wouldnt be able to open the butterflies on the GSR intake manifold.
edit: reading > meh 93 :doh:
yes...the p30 is the ideal ecu, or the obd1 pr3 j51 ecu