I'm one of the current data testers on this...
My current SC is blocked at the intake. I have yet to notice a difference from being blocked or unblocked. At this point..I'd say don't bother because there doesn't appear to be any performance gain.
I have a spacer on the inlet to my SC for the water injection but unlike Dirthead'*, it has a hole drilled in it for the coolant circulation.
The new adapter plate spacer to connect the Gen V to my existing L67 Throttle body does not have any coolant holes in it. That means it will be deadheading the coolant.
This post has gotten very interesting.
I hadn't seen Bill'* thermography representation before.
My belief, that Bill does not agree with, it that the EGR has a huge effect on inlet temps and it'* right at the same location that shows red in Bill'* first illustration. It'* pumping in +500 F exhaust gas.
I have eliminated my EGR and the inlet is noticeably cooler. I use temp strips and IR gun to monitor under every condition.
Now I have to decide if I should either drill the Gen V spacer or plug the LIM holes like Dirthead did.
The biggest benefit to plugging the holes is three less potential coolant leaks.