[MetroMPG]

I love reading these success stories - congrats on the great improvement.

I'm with palemelanesian: the first mod I'd recommend is a partial lower grille block (only if you're the type of driver who pays attention to the instruments). It's easy to do/undo, and has multiple benefits all of which lead to better MPG: faster warm-up; more heat retention in the drivetrain; better aero.