So I decided to do my first mod after I got a truck shipment at work and had some extra cardboard. It looks horrible and ridiculous, but it is only temporary, so I can see how my FE increases (hopefully!). Later, I will make a long term and probably open-able one.
On the top block, I left the bottom row open, mostly because that's what size the cardboard was, but since this is my first try, I also don't want to block it too much and get it too hot. I decided to block the top row instead of the bottom row, so a little more air hits the radiator, rather than hitting some other parts which are higher up behind the grill (i.e. the hood latch and some other stuff). On the bottom, I left the sides open for pretty much the exact same reasons.
Full View:
Don't mind the damage on the left... previous owner
Upper Grill:
Just the lower row is not blocked. Full block on top and middle row from side to side.
Lower Grill:
Laying on the ground looking up (blurry):
Laying on the ground looking up (straight on):
The upper grill is further back then the bottom grill.
Laying on the ground looking up & slightly forward:
I scuffed up the cardboard, but it didn't go all the way through, so it won't be a problem. I'm not really sure why my car has Styrofoam in the bumper, but whatever
I'll keep everyone updated with how it works on my FE.