I live in PA and the jeep, as far as I know, has only been in PA. It does have 4 O2 sensors and they were not that hard to replace. I am still amazed at how much they control your Jeep! I now have a smooth idle, better gas mileage, and more power. Amazing!!
As stated before, there was an option for cali emissions with 4, look at your manifold. If it has 2 you have cali emissions (and will have 2 more downstream), if it.has one you have regular emissions and will only.have 1 more
As stated before, there was an option for cali emissions with 4, look at your manifold. If it has 2 you have cali emissions (and will have 2 more downstream), if it.has one you have regular emissions and will only.have 1 more