Remove the restriction of the oem upper grille and you will get more air coming out the bottom.
It's negligible because on cars without a FUNCTIONAL splitter (that means about touching the deck) the air pressure under the car is very high. Sure, you can jam a little more air out of the bottom, it's not like it's sealed. I'm not dealing in absolutes. I'm saying that the gains are so small as to be insignificant.
Additionally if you chuck more air under the car you increase lift and drag.
You are making it out like the existing openings on both sides of the block, and in front of the block are some kind of massive restriction.
I don't have the wind tunnel data to show you. But I am best friends with the guy who does have it/has done the testing. They are a massive restriction. You're either going to believe it or not. I don't even know why I'm wasting my time arguing with you. After this post you're going back on ignore. Are you the replacement for Dub?
They are..up to a point, but not enough that an unrestricted upper grille won't have an effect. Boss has no hood vents. They run cooler with their oem upper grille tossed.
Says you^^^^
Yet when I'm hanging out
at the track with
fast guys that also happen to be
engineers that run BOSS 302's and they tell me opening the grill up didn't do any good, I tend to believe them.
Most of the population falls victim to the placebo effect when it comes to performance gains. I see it every single day ad nauseam. Just yesterday I saw a guy making an incredibly hostile argument that sub frame connectors on S197's are a good mod and when he did them to his car he could feel the handling difference ON THE STREET!!!!
I know you're going to argue (which I won't see) that there is no placebo effect with a temp gauge. Which is true. But running a back to back test eliminating all variables, which there are a billion when it comes to cooling, is nearly impossible. You certainly aren't doing it with one temp reading.
Add incomplete data to placebo effect and you have urban legend.
Good day sir.