[Joe240]

Umm I hate to be the pessimist, but plume of white smoke out the tailpipe followed by overheating tells me head gasket blew (most likely) and you were burning coolant. Would explain why the reservoir was completely empty as well.

I may be wrong, but I believe the A2W intercooler in the intake is on a separate coolant loop than the radiator loop (why would you want to super heat your intake air using engine coolant?) so I don't believe it was that.