im a practical guy, not going to spend 90k for an insignt or 140k for prius just to declare im a tree hugger.

for my current ride. i remained everything stock bcoz i believe the parts designed by hundred if not thousand of experience automotive engineers have gone thru proper R&D cycle with proven performance & duranbility.

only thing i did to Decrease my FC is to make it lightweight by removing junk in the trunk. no excessive load in truck/glove box watsoever.

Still i must stress, FC is vastly depend on individual driving style.