The car will not pass if your running obd1 jumper harness. The way they do it here for 95-under cars they put it on a dyno so they can actually run it like its driven on the roads,check gas cap and if catalytic converter is present. And 96-newer obd2 cars they just plug it up to the comp to check for codes. Its very simple. There is always a way of passing...just got to find the right person.