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Swap the two black wires from your o2....

Hi, I just finished swaping a B16 into my 92 eg hb, the motor runns great. The problems i am having 1. I'm getting a code 41 (primary o2 heater) I have replaced the o2 and i am still getting the same code. Problem #2 is, I am also getting code 21 (vtec) I have double and triple check all...