B16, B18, B20
By EGRUNNER
#316161 hey i am looking into getting a jdm obd1 gsr and put into my eg hatch just wanted to make sure i can pass emissions from what i read i will be ok. just use stock harness and wire in vtec. and maybe have to get a usdm ecu
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By chrono404
#316226 Not sure the question.

If you get a OBD1 or a OBD2 GSR Engine and mount it into your Civic, You will need a USDM OBD1 P72 ECU and a OBD1 Distrubtor and Alternator.

For the Wiring Harness you want to your stock harness and Wire in VTEC as well as the Knock Sensor. You will also have to extend the o2 sensor wiring. If you have a 92 civic you can get the wiring harness out of a EX Civic Sedan/Coupe or a Si delsol/hatch and have VTEC wired in, then just need to chase in a Knock Sensor.

If you have the above and a Catalytic Converter, you should pass emissions as long as the engine is healthy.