better MPG

Its been a long time since i have messed around with timing. Im lookin for better mileage outta my 318 in my power wagon 4x4. I remember someone telling me backing it off a degree or two from factory will improve mileage, while bumping it forward will improve power. True, false, or oppisite
thanks.

every penny i can save on my other modes of transportation meens more money for the duster.
Author: admin