If your buying a diesel to roll coal you need to spend your money elsewhere! what happens when you put a bag over the intake is you starve the turbo of air. therefor you fool your engine and it will keep feeding fuel. All that coal you speak of is unused fuel fyi. You will not maitain any fuel economy in doing so.
New Hampshire is a Dillon Rule state, meaning that the state retains all powers not specifically granted to municipalities. Even so, the legislature strongly favors local control, particularly with regard to land use regulations. New Hampshire municipalities are classified as towns or cities
List of cities and towns in New Hampshire. New Hampshire is a state located in the Northeastern United States. This is a list of the 221 towns and 13 cities in the U.S. state of New Hampshire. New Hampshire is organized along the New England town model, where the state is nearly completely incorporated and divided into towns, some of which the state has designated as cities.