i have a 99 b18c Gsr motor going into a 93 civic.. what jumper do i need for the ecu? i have the obd2 ecu.. is there a obd1 - obd2 jumper?

 

The best thing would be to use a 94-95 OBD1 P72 GSR ECU. If not, you can get an OBD1 to OBD2 ECU adapter. If it's a USDM OBD2 ECU, then you'll need to do some additional wiring, if it's a JDM OBD2 ECU then there will be no extra wiring.