Well, I've tested above 100MPH now. 125 and the scoop held just fine. The thin is, there should be no pressure on the scoop since I made a real tight fit around the metal pipes coming through the honeycomb. The pipes we originally exaust extensions that I pounded into shape. The I hooked up the flexible tubing.
There probably is some HP gain but I suspect minimal. This was more for fun and looks.
I'm likely going to add power next similar to my custom GT as in the sig. BTW if you haven't checked out Induction Concepts Turbo's give it a try. Amazing power.