i took my civic to get smog and it didnt pass... the guy told me that the O2 sensor was gathering info from 1 of the runners on the header... when it suppose to be getting it from the collector. what i dont understand is that its a dc header (carb legal), should it be like that...? is the guy right? thanks H.T.

btw... its an ej1 w/ intake, headers, and exhaust.