[Blue93G20]

Ok me and my friend were looking at the metal braket where the MAF sensor plugs into and were wondering how come it gets so damn small in the middle. My intake goes from 3 iches to a tiny ass bottle neck of about 2 inchs and back to 3 again. My question is are there any mods that make that opening bigger, like a replacement bracket and is this restricting air flow. Thanks for any info.