ok that makes perfect sense.
seeing how my rad is sealed off in the front, (except the bottom, but will be when i make my tray) how do i determine if i should block my lower grille?
air will enter the top grille and go down to behind the lower grille anyway. if i block it, i still have a pocket since the lower grille opening is recessed. will it be an advantage to having a pocket closed off down there, or the air hitting the lower radiator?
and if it's blocked off, there seems to be a sensor located there. i wonder if that will affect anything?
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