Iam using a converted to mpfi main and engine harness. I wanted to run the vtec through the chipped ecu. What pins do I remove on the dx harness to add vtec so that the pr3 would see it? SI/HF are a8 and b5 for the oil pressure switch. The ecu bypasses the others.

Can I take out the same location pins? Or do I need a cabin and engine harness from a hf or si for this to work? I don't want to run the msd atavtor.