a water to air intercooler means that the water is used to cool the air. air passes thru the intercooler, not water. they also have air to air which are most TT style front mounted intercoolers.
i believe the cobra's is water-to-air. it uses some of the coolant to pass by the intercooler cause its not a direct pre-radiator intercooler. not 100% though
**I have sigs turned off, so if you're asking for advice based on your mods, I can't see them**