Originally Posted by quazimoto
Most aftermarket splitters direct and distribute air equally over the TMIC. The one the OP made will just cool the top part of the TMIC.
The OPs design, once fixed, will help force the air through the TMIC which will improve cooling. Yes some of them have a fancy divider but Im not totally convinced those work all that well. The name of the game is to get the air through the IC, not just on it.