well go over all the dumb stuff first (vaccuum lines, sensors and the like)
my guess is that the only way to have it fixed is to have the emanage tuned. First of all, the WOT throttle map is obviously really rich, and ontop of the weather being so cold, the IAT sensor makes it even more rich (even on my stock car i notice my A/F change with air temp).
I think you should ditch the emanage, or try to get it tuned, althoguh i realize both suggestions could be difficult for one reason or another.
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