Coolant leak, I think

2011 STi, this past summer went stage 2: DP, SF intake, inlet, TGV deletes and Crawford AOS v2 (w/ a protune). Have had zero issues until now:

Coolant leak on the side of the AOS, can't find a source

There's a nice little collection of coolant puddling behind the AOS (wtf??).

Sooo... Besides refilling coolant, what should I do next? Any suggestions?? I'm not overheating... Cars running fine. Help

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Coolant flows down with gravity. If you can't see it from above, look at the area from below. Pics on the net won't help you.


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