Actually, over time, it will heat up just like the stock one will. But it will take longer to heat up and to cool off because fiberglass won't conduct/dissipate the heat as quickly as metal will. For the same reason it won't feel as warm to the touch as a metal hood would. Be sure whatever you get has quality/reinforced construction especially in the hinge and latch areas. Those are the areas that really take a beating during opening and closing of the hood.