Thanks Jacinto!
I like the notes you left in your gas logs.
I'm attributing drafting as the main reason I'm
even getting over 50mpg. I wonder how much
better the lean burn will get me? If I can get 5mpg
more, I should be getting in the 60's mpg.

Hey I noticed you bought another O2 sensor. Is it the $79
from ebay? LMK.
Gary

Yep, it is. TomO emailed me the link to it. I guess the jury is still out on whether it's any good tho...

Have you seen this post from krousdb?
https://www.gassavers.org/showthread.php?t=477
The vacuum guage should be fairly easy to install & would help increase FE.