Have put D15b 3 stage in 94 civic it’s a jdm Obd2a . Using a conversion harness to run P2J-003 ecu with stock harness had to run egr/ 2 vtec wires / crank position wires to ecu everything else plugged right up . Car starts right and runs fine on old po5 obd1 ecu but will not even attempt to run with Obd2a ecu . Any ideas would be appreciated .
