i completed my grille blocking today. i did it mostly for aero, but my setup should increase the cooling of my radiator as well. i have a large opening below and my radiator is almost completely sealed all around so all air hits it.
check it out:
http://ecomodder.com/forum/showthrea...ront-3519.html
if you're trying to warm your car faster, simply driving it right away like a hypermiler should will warm it far faster than the morons that sit and idle all morning long.
ironic people think sitting there is better for the engine, when it's worse for everything.