Eagle talon tsi awd turbo is having big problems?

well it starts fine. it overheats quickly though and i added antifreeze but no change. i then took the thermostat out and left it out and ran it that way, ran better but still not right. it also has no power with the thermostat in . but had more power when it was out. it acts like a blown head gasket but then it doesn't because when it does decide to actually drive it drives fine until it heats up. it takes two minutes be for it reaches half way on the engine temp and then starts too climb rapidly to the top of the engine temp dial. it also has a hot steam and some antifreeze come threw the over flow line that goes into the over flow reservoir. and the steam increases as it heats up...