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depending on which h22 you swap, you will need to get the corresponding ecu.
The OBD1 ecu is coded as p13
The OBD2 ecu is coded as p5m
a 93-95 h22 is OBD1, and you can only use an OBD1 ecu on it.
a 96-01 h22 is OBD2, and you initially must use an OBD2 ECU, which tends to detune itself for emissions control; but can be converted to OBD1 if you buy the jumper/harness+OBD1 ECU.
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