No you do not need to DOWN GRADE to obd1. If the header has a different location for the sensor, just extend the wire on the sensor so that it reaches the mounting location on header - aka bunhole.New question!!! Same thread.. if I switch headers to a rmf replica, will I have to convert to obd1 because my o2 sensors are moving? I really just need to pass emissions and iam trying to knock out my whole exhaust in one swing
I would do the most important thing first, which is the emissions test. Once that is out of the way, you have 2 years untill your next test. I would rather pass the test first then modify. Of course you can do both at once, its all up to you man, good luck.