You're looking at 1mpg per 100lbs.
That's about 2mpg in weight. Now I run SD, and I shift at 3000rpms, I find that gives me the best economy.
I honestly don't know of a new ignition. Now the OBD II, found in the first Gen 4.6L maybe better with economy, but I don't have one, so I can't say.
[This message has been edited by Unit 5302 (edited 05-20-2001).]
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