How much does a hood scoop actually help?

3 to 4 tenths, on this. It was sealed. View attachment 1715226349
that is a bunch for that type scoop !
I read a post on here a good while back, that the guy said those scoops were a joke, and wouldn`t pull any air at all. I had to add an extra hood pin in the back because it was lifting the hood at 128-130 in the 1/4. I think the front design of the car has a big big effect on it . .