Yeah...I don't know the exact cause of my drop in temps, but I know that when I added my extra 80mm (actually just used the one from the bar) underneath my vid card exhausting the heat blowing down from it (it blows down because it's a slim card with no fan enclosure), and when I added my extra 120mm to my Xiggy, and removed the bar, it dropped my temps about 3 or 4*C (as in MB temps....CPU temps obviously dropped due to the extra 120MM). But yeah, I think it screwed with the airflow a bit just because it introduced totally different "current" flows in the case.
Here's what it looks like.
The only fan you can't see is the 120mm in front pulling air in (which you know already Poker..haha)
Intel Core i7-2600K @ 3.4GHz || GIGABYTE GA-Z68X-UD3P-B3 || Corsair Vengeance 16GB DDR3-1600 || EVGA GeForce GTX 480 || Samsung EVO 256GB SSD
my feet get cold and that gives me diarrhea sometimes - Smart_Guy