Congrats on the improvement!
--
Agreed: lean burn, used properly, is a good replacement for high/medium speed P&G, and far less troublesome.
You'll want to investigate aero mods though (at least the stealth ones), to "widen" your lean burn envelope by reducing engine load at your 60 mph target speed.
The alternator delete will help there too, provided the computer stays happy with the reduced voltage.
Here's the link to the PSI testing I did:
http://ecomodder.com/forum/showthrea...tire-2721.html
That thread contains results for a 1999 Camry, 1998 Firefly (Metro), and my 1992 Metro EV.
