Can you take (or do you have already) a close up pic, that shows where the hole is right behind the grill? It seems that the actual opening is half behind the blocked off sections when stock.Ignore all the rude geniuses that have a hard time with reading comprehension. You are correct,it does terminate in the upper grill as shown by BBB.If you look closely you'll see only a few holes are open for air intake.That seemed a minor restriction so I opened all of them up. It may or may not help but it made me feel better.