On 2002-03-19 23:03, TUNIS wrote:
actually, it should be the other way around...if you put it after the cut-out and you open it up, the exhaust will exit out of the cut-out and the O2 sensor will pick up a different value and trip your check engine light. if you put it before, the O2 sensor will register the same output of exhaust gases because there is no interuption in exhaust flow...