Hi Jimmy, If you have the California emissions package you have 2 O2 sensors (narrow band) upstream of your catalytic converter, so one of our dual Narrow Band EFIE?s be needed. If you have the federal emissions package then you have 1 O2 sensor (narrow band) upstream of your catalytic converter, so one of our single Narrow Band EFIE?s would work.
Consider the Digital EFIE however, as for the reasons we explain on our website.
Usually it is installed under your hood, after initially getting it set there is no need to adjust it again. A few do install them in the glove compartment or cab of their vehicle. Thnaks