[tonythetarga]

Can you confirm that you do have a center radiator? If you don't then a lower temp thermostat doesn't give you extra capacity for cooling...it just opens the flow sooner. Did the same thing with my Boxster. Not a significant change until I added the Boxster S center radiator and added cooling capacity. I went back to the stock temp thermostat too. I can run the car hard on a hot day at the track with no overheating issues. Rock steady in the center of the gauge. Repeatedly overheating these engines to the point of boil over will give you engine trouble before long.