I tried searching the forum but didn't see anything.
My idea is to put something like this into a metal intake tube to heat the air going into the intake. Similar to a diesel setup.
Ford Thermostart Intake Manifold Heater 2000 3000 4000 5000 7000-7710 C5NE9A436A | eBay
In this cold climate of mn I think it might help in the winter time for mileage.
What do you think?