Three hours and cool to the touch!
From Grant Sampson:
Couple of pictures from this past weekend at Wekfest in New Jersey. I haven't taken a temp reading but can tell you after driving three hours home from the Wekfest event in New Jersey, the piping was cool to the touch. Before, the thermal protection, if you touched the piping it would nearly burn your hand. I have the silver on the firewall behind the turbos. Amazing Product!