ok i need help, i have a 90 hatch, gsr swap everything obd1, stock ecu, blox manifold, stock gsr TB, ok so i start it up and it starts right up then it will rev high then a little "pop" noise happens then it dies down then does it all over again repeatedly, i left it on to see where the popping was coming from and its coming from the 3rd injector area or 3rd cylinder, (have plastic white gasket so i can see it spark from there) when it sparks (pop) it dies down and the redoes this, any ideas on what it can be? any help thanks