WOW that is really weird I have never seen a TB modified like that. Where you see the 2 bolts to the left and right is where there should be 2 hookups for a coolant hose (It circulates hot coolant through the TB to decrease humidity and freezing). Looks like somebody plugged them up and for some reason mounted another nipple in teh middle??
I have never seen that before can you get a clearer pic?
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Mods: M50 intake manifold, BFP CAI, Fan delete, CDV delete, Clears all around, M contours, Clutch stop, Debaffled exhaust, CF BMW emblems