Quote: Check O2 Sensor. I changed mine and it got waaayyy better. I just got over 300 miles per tank. btw, its 87 NA.
That is probably 20-22mpg. I get that in my 89 N/A. 15mpg around town, a/c on all the time here in the desert. I know I run a bit rich, but its better than too lean.
Universal O2 will work for N/A, there is an adapter plate available to bolt it in to the manifold.