I just did the Fed ECU and 5 wire O2 sensor swap yesterday. On my first test run I got 54mpg! Lean burn is pretty fun to play with. I still need to practice it some more. I found it pretty hard to stay in on the highway when going up anything steeper than a slight grade. I think with improved technique and some Low Rolling Resistance tires, it'll get better.
I used the great advice in this thread that I'm posting in right now and
this thread. Many thanks to everyone that contributed, esp monroe74 and Wandering Albatross! Thank you all!
more to come after I've driven it some more....
__________________